Joint Instability
Pronation
Supination
Wrist Joint
Medial Collateral Ligament, Knee
Ligaments, Articular
Stifle
Osteoarthritis
Joints
Range of Motion, Articular
Anterior Cruciate Ligament
Cartilage, Articular
Genomic Instability
Chromosomal Instability
Joint Diseases
Microsatellite Instability
Finger Joint
Ankle Joint
Hip Joint
Tarsal Joints
Joint Capsule
Microsatellite Repeats
Shoulder Joint
Temporomandibular Joint Disorders
Metatarsophalangeal Joint
Joint Prosthesis
Foot Joints
Biomechanical Phenomena
Temporomandibular Joint Disc
Acromioclavicular Joint
Mutation
Dislocations
DNA Repair
Arthritis, Rheumatoid
Non-operative management of acetabular fractures. The use of dynamic stress views. (1/1247)
To assess the stability of the hip after acetabular fracture, dynamic fluoroscopic stress views were taken of 41 acetabular fractures that met the criteria for non-operative management. These included roof arcs of 45 degrees, a subchondral CT arc of 10 mm, displacement of less than 50% of the posterior wall, and congruence on the AP and Judet views of the hip. There were three unstable hips which were treated by open reduction and internal fixation. The remaining 38 fractures were treated non-operatively with early mobilisation and delayed weight-bearing. At a mean follow-up of 2.7 years, the results were good or excellent in 91% of the cases. Three fair results were ascribed to the patients' other injuries. Dynamic stress views can identify subtle instability in patients who would normally be considered for non-operative treatment. (+info)Anterior instability of the glenohumeral joint with humeral avulsion of the glenohumeral ligament. A review of 41 cases. (2/1247)
We studied retrospectively a consecutive series of 547 shoulders in 529 patients undergoing operation for instability. In 41, the cause of instability was considered to be lateral avulsion of the capsule, including the inferior glenohumeral ligament, from the neck of the humerus, the HAGL lesion. In 35, the lesion was found at first exploration, whereas in six it was noted at revision of a previous failed procedure. In both groups, the patients were older on average than those with instability from other causes. Of the primary cases, in 33 (94.3%) the cause of the first dislocation was a violent injury; six (17.4%) had evidence of damage to the rotator cuff and/or the subscapularis. Only four (11.4%) had a Bankart lesion. In patients undergoing a primary operation in whom the cause of the first dislocation was a violent injury, who did not have a Bankart lesion and had no suggestion of multidirectional laxity, the incidence of HAGL was 39%. (+info)Neurogenic origin of articular hyperemia in early degenerative joint disease. (3/1247)
It has been speculated that joint instability resulting from anterior cruciate ligament (ACL) rupture could be exacerbated by changes in vasomotor activity in the remaining supporting structures. In this study, the effect of ACL transection on medial collateral ligament (MCL) basal perfusion and its responsiveness to calcitonin gene-related peptide (CGRP) and sympathetic adrenergic influences was examined. Using urethan-anesthetized rabbits, we tested the effects of CGRP and its antagonist CGRP-(8-37) by topical application of these agents to the exposed knee while sympathetic influences were tested by electrically stimulating the saphenous nerve. It was found that MCL basal perfusion was elevated in ACL-sectioned joints; however, this effect was abrogated by prior resection of the articular nerve supply. At the doses tested, the normal vasodilator response to CGRP was abolished in ACL-sectioned joints, whereas the response to CGRP-(8-37) was attenuated. Even under the influence of increased constrictor tone, MCL and capsule blood vessels still showed substantially reduced responses to exogenous CGRP administration. By contrast, nerve-mediated constrictor responses were mostly unaffected by joint instability. This study suggests that posttraumatic knee joint hyperemia is neurogenically mediated, possibly by increased secretion of CGRP. (+info)Diacerhein treatment reduces the severity of osteoarthritis in the canine cruciate-deficiency model of osteoarthritis. (4/1247)
OBJECTIVE: To determine if diacerhein protects against the early stages of joint damage in a canine model of osteoarthritis (OA). METHODS: OA was induced in 20 adult mongrel dogs by transection of the anterior cruciate ligament of the left knee. Beginning the day after surgery, dogs in the active treatment group were dosed twice a day with capsules of diacerhein, providing a total daily dose of 40 mg/kg, for 32 weeks. Dogs in the control group received placebo capsules on the same schedule. Pathology in the unstable knee was assessed arthroscopically 16 weeks after surgery and by direct observation when the dogs were killed 32 weeks after surgery. The severity of gross joint pathology was recorded, and samples of the medial femoral condyle cartilage and the synovial tissue adjacent to the central portion of the medial meniscus were collected for histologic evaluation. Water content and uronic acid concentration of the articular cartilage from the femoral condyle were determined, and collagenolytic activity in extracts of cartilage pooled from the medial and lateral tibial plateaus was assayed against 14C-labeled collagen fibers. RESULTS: Diacerhein treatment slowed the progression of OA, as measured by grading of gross changes in the unstable knee at arthroscopy 16 weeks after cruciate ligament transection (P = 0.04) and at the time the animals were killed, 32 weeks after surgery (P = 0.05). However, 32 weeks after ACL transection, the mean proteoglycan concentration and water content of the OA cartilage and the level of collagenolytic activity in extracts of the cartilage were not significantly different in the diacerhein treatment group than in the placebo treatment group. CONCLUSION: Diacerhein treatment significantly reduced the severity of morphologic changes of OA compared with placebo. These findings support the view that diacerhein may be a disease-modifying drug for OA. (+info)Effects of aggressive early rehabilitation on the outcome of anterior cruciate ligament reconstruction with multi-strand semitendinosus tendon. (5/1247)
To evaluate the effects of aggressive early rehabilitation on the clinical outcome of anterior cruciate ligament reconstruction using semitendinosus (and gracilis) tendon, 103 of 110 consecutive patients who underwent ACL reconstruction using multistrand semitendinosus tendon (ST) or the central one-third of patellar tendon with bony attachments (BTB) were analyzed prospectively. Subjectively, the Lysholm score was not different among the groups. The Lachman test indicated a trend of less negative grade in the ST men's group than that in the BTB men's group. On the patellofemoral grinding test, only women patients of both groups showed pain, with less positive crepitation in the ST group than in the BTB group. KT measurements at manual maximum showed more patients with more than 5 mm differences in the ST group than in the BTB group. The results of this study suggest that aggressive early rehabilitation after the ACL reconstruction using the semitendinosus (and gracilis) tendon has more risk of residual laxity than with the BTB. (+info)A clinico-pathological study of cervical myelopathy in rheumatoid arthritis: post-mortem analysis of two cases. (6/1247)
Two patients who developed cervical myelopathy secondary to rheumatoid arthritis were analyzed post mortem. One patient had anterior atlanto-axial subluxation (AAS) combined with subaxial subluxation (SS), and the other had vertical subluxation (VS) combined with SS. In the patient with AAS, the posterior aspect of the spinal cord demonstrated severe constriction at the C2 segment, which arose from dynamic osseous compression by the C1 posterior arch. A histological cross-section of the spinal cord at the segment was characterized by distinct necrosis in the posterior white columns and the gray matter. In the patient with VS, the upper cervical cord and medulla oblongata showed angulation over the invaginated odontoid process, whereas no significant pathological changes were observed. At the level of SS, the spinal cord was pinched and compressed between the upper corner of the vertebral body and the lower edge of the lamina. Histologically, demyelination and gliosis were observed in the posterior and lateral white columns. (+info)Ten- to 15-year outcome of surgery for lumbar disc herniation: radiographic instability and clinical findings. (7/1247)
The most appropriate treatment for radiculopathy associated with disc pathology is still controversial. Since 1934, surgical treatment has consisted of hemilaminectomy and removal of the herniated material. Many authors believe that these procedures may cause degenerative spondylosis and vertebral instability. Several surgical methods have been proposed, but the long-term effects are still being debated. In addition there appear to be few well-designed outcome studies on the management of this disease. In the present study, 150 patients were selected for surgery with strict criteria and all treated with the standard technique. The series was evaluated by subjective analyses (Roland questionnaire; 120 patients), objective examinations (68 patients - 56.6%) and radiographic studies including dynamic views (analyzed by the Taillard and Boxall methods) to establish the presence of vertebral instability (50 patients - 41.6%). The subjective and objective analyses showed a high rate of good results. Radiographic studies showed vertebral instability in 30 cases, but only 9 were symptomatic. Recurrences were not observed and only a few patients suffered from leg pain. The standard procedure for lumbar disc herniation showed good results at 10- and 15-year follow-up. (+info)Spontaneous or traumatic premature closure of the tibial tubercle. (8/1247)
A premature closure of the physis of the tibial tubercle in a young man has given rise to a shortening of the tibia, a patella alta and a reversed tibial slope of 20 degrees with clinical genu recurvatum. After a proximal open wedge tibial osteotomy all three postural deformities could be restored. The etiology of this complex deformity is discussed. (+info)Joint instability is a condition characterized by the loss of normal joint function and increased risk of joint injury due to impaired integrity of the supporting structures, such as ligaments, muscles, or cartilage. This can result in excessive movement or laxity within the joint, leading to decreased stability and increased susceptibility to dislocations or subluxations. Joint instability may cause pain, swelling, and limited range of motion, and it can significantly impact a person's mobility and quality of life. It is often caused by trauma, degenerative conditions, or congenital abnormalities and may require medical intervention, such as physical therapy, bracing, or surgery, to restore joint stability.
Pronation is a term used in the medical field, particularly in the study of human biomechanics and orthopedics. It refers to the normal motion that occurs in the subtalar joint of the foot, which allows the foot to adapt to various surfaces and absorb shock during walking or running.
During pronation, the arch of the foot collapses, and the heel rolls inward, causing the forefoot to rotate outward. This motion helps distribute the forces of impact evenly across the foot and lower limb, reducing stress on individual structures and providing stability during weight-bearing activities.
However, excessive pronation can lead to biomechanical issues and increase the risk of injuries such as plantar fasciitis, shin splints, and knee pain. Proper assessment and management of foot mechanics, including orthotics or physical therapy interventions, may be necessary to address excessive pronation and related conditions.
Supination is a term used in the medical field, particularly in the study of anatomy and orthopedics. It refers to the external rotation of the forearm so that the palm faces forward or upward. This motion allows for the hand to be in a position to perform actions such as lifting, holding, or throwing objects. It's also used to describe the movement of the foot when it rolls outward, which is important for normal walking and running gait. Abnormal supination can lead to issues with mobility and pain in the affected limb.
The wrist joint, also known as the radiocarpal joint, is a condyloid joint that connects the distal end of the radius bone in the forearm to the proximal row of carpal bones in the hand (scaphoid, lunate, and triquetral bones). It allows for flexion, extension, radial deviation, and ulnar deviation movements of the hand. The wrist joint is surrounded by a capsule and reinforced by several ligaments that provide stability and strength to the joint.
The medial collateral ligament (MCL) of the knee is a band-like structure located on the inner side of the knee joint. It connects the end of the femur (thighbone) to the top of the tibia (shinbone) and helps stabilize the knee by controlling side-to-side movement and preventing excessive separation of the bones. The MCL provides resistance to valgus force, which is a pushing or pulling force that attempts to push the bones apart in a direction away from the midline of the body. MCL injuries often occur due to direct impact to the outer knee or sudden changes in direction that strain the ligament.
Articular ligaments, also known as fibrous ligaments, are bands of dense, fibrous connective tissue that connect and stabilize bones to each other at joints. They help to limit the range of motion of a joint and provide support, preventing excessive movement that could cause injury. Articular ligaments are composed mainly of collagen fibers arranged in a parallel pattern, making them strong and flexible. They have limited blood supply and few nerve endings, which makes them less prone to injury but also slower to heal if damaged. Examples of articular ligaments include the anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) in the knee joint, and the medial collateral ligament (MCL) and lateral collateral ligament (LCL) in the elbow joint.
The term "stifle" is commonly used in veterinary medicine to refer to the joint in the leg of animals, specifically the knee joint in quadrupeds such as dogs and horses. In human anatomy, this joint is called the patellofemoral joint or knee joint. The stifle is a complex joint made up of several bones, including the femur, tibia, and patella (kneecap), as well as various ligaments, tendons, and cartilage that provide stability and support. Injuries or diseases affecting the stifle can cause lameness, pain, and decreased mobility in animals.
The knee joint, also known as the tibiofemoral joint, is the largest and one of the most complex joints in the human body. It is a synovial joint that connects the thighbone (femur) to the shinbone (tibia). The patella (kneecap), which is a sesamoid bone, is located in front of the knee joint and helps in the extension of the leg.
The knee joint is made up of three articulations: the femorotibial joint between the femur and tibia, the femoropatellar joint between the femur and patella, and the tibiofibular joint between the tibia and fibula. These articulations are surrounded by a fibrous capsule that encloses the synovial membrane, which secretes synovial fluid to lubricate the joint.
The knee joint is stabilized by several ligaments, including the medial and lateral collateral ligaments, which provide stability to the sides of the joint, and the anterior and posterior cruciate ligaments, which prevent excessive forward and backward movement of the tibia relative to the femur. The menisci, which are C-shaped fibrocartilaginous structures located between the femoral condyles and tibial plateaus, also help to stabilize the joint by absorbing shock and distributing weight evenly across the articular surfaces.
The knee joint allows for flexion, extension, and a small amount of rotation, making it essential for activities such as walking, running, jumping, and sitting.
Osteoarthritis (OA) is a type of joint disease that is characterized by the breakdown and eventual loss of cartilage - the tissue that cushions the ends of bones where they meet in the joints. This breakdown can cause the bones to rub against each other, causing pain, stiffness, and loss of mobility. OA can occur in any joint, but it most commonly affects the hands, knees, hips, and spine. It is often associated with aging and can be caused or worsened by obesity, injury, or overuse.
The medical definition of osteoarthritis is: "a degenerative, non-inflammatory joint disease characterized by the loss of articular cartilage, bone remodeling, and the formation of osteophytes (bone spurs). It is often associated with pain, stiffness, and decreased range of motion in the affected joint."
A joint is the location at which two or more bones make contact. They are constructed to allow movement and provide support and stability to the body during motion. Joints can be classified in several ways, including structure, function, and the type of tissue that forms them. The three main types of joints based on structure are fibrous (or fixed), cartilaginous, and synovial (or diarthrosis). Fibrous joints do not have a cavity and have limited movement, while cartilaginous joints allow for some movement and are connected by cartilage. Synovial joints, the most common and most movable type, have a space between the articular surfaces containing synovial fluid, which reduces friction and wear. Examples of synovial joints include hinge, pivot, ball-and-socket, saddle, and condyloid joints.
Articular Range of Motion (AROM) is a term used in physiotherapy and orthopedics to describe the amount of movement available in a joint, measured in degrees of a circle. It refers to the range through which synovial joints can actively move without causing pain or injury. AROM is assessed by measuring the degree of motion achieved by active muscle contraction, as opposed to passive range of motion (PROM), where the movement is generated by an external force.
Assessment of AROM is important in evaluating a patient's functional ability and progress, planning treatment interventions, and determining return to normal activities or sports participation. It is also used to identify any restrictions in joint mobility that may be due to injury, disease, or surgery, and to monitor the effectiveness of rehabilitation programs.
The Anterior Cruciate Ligament (ACL) is a major stabilizing ligament in the knee. It is one of the four strong bands of tissue that connect the bones of the knee joint together. The ACL runs diagonally through the middle of the knee and helps to control the back and forth motion of the knee, as well as provide stability to the knee joint. Injuries to the ACL often occur during sports or physical activities that involve sudden stops, changes in direction, or awkward landings.
Articular cartilage is the smooth, white tissue that covers the ends of bones where they come together to form joints. It provides a cushion between bones and allows for smooth movement by reducing friction. Articular cartilage also absorbs shock and distributes loads evenly across the joint, protecting the bones from damage. It is avascular, meaning it does not have its own blood supply, and relies on the surrounding synovial fluid for nutrients. Over time, articular cartilage can wear down or become damaged due to injury or disease, leading to conditions such as osteoarthritis.
Genomic instability is a term used in genetics and molecular biology to describe a state of increased susceptibility to genetic changes or mutations in the genome. It can be defined as a condition where the integrity and stability of the genome are compromised, leading to an increased rate of DNA alterations such as point mutations, insertions, deletions, and chromosomal rearrangements.
Genomic instability is a hallmark of cancer cells and can also be observed in various other diseases, including genetic disorders and aging. It can arise due to defects in the DNA repair mechanisms, telomere maintenance, epigenetic regulation, or chromosome segregation during cell division. These defects can result from inherited genetic mutations, acquired somatic mutations, exposure to environmental mutagens, or age-related degenerative changes.
Genomic instability is a significant factor in the development and progression of cancer as it promotes the accumulation of oncogenic mutations that contribute to tumor initiation, growth, and metastasis. Therefore, understanding the mechanisms underlying genomic instability is crucial for developing effective strategies for cancer prevention, diagnosis, and treatment.
Chromosomal instability is a term used in genetics to describe a type of genetic alteration where there are abnormalities in the number or structure of chromosomes within cells. Chromosomes are thread-like structures that contain our genetic material, and they usually exist in pairs in the nucleus of a cell.
Chromosomal instability can arise due to various factors, including errors in DNA replication or repair, problems during cell division, or exposure to environmental mutagens. This instability can lead to an increased frequency of chromosomal abnormalities, such as deletions, duplications, translocations, or changes in the number of chromosomes.
Chromosomal instability is associated with several human diseases, including cancer. In cancer cells, chromosomal instability can contribute to tumor heterogeneity, drug resistance, and disease progression. It is also observed in certain genetic disorders, such as Down syndrome, where an extra copy of chromosome 21 is present, and in some rare inherited syndromes, such as Bloom syndrome and Fanconi anemia, which are characterized by a high risk of cancer and other health problems.
Joint diseases is a broad term that refers to various conditions affecting the joints, including but not limited to:
1. Osteoarthritis (OA): A degenerative joint disease characterized by the breakdown of cartilage and underlying bone, leading to pain, stiffness, and potential loss of function.
2. Rheumatoid Arthritis (RA): An autoimmune disorder causing inflammation in the synovial membrane lining the joints, resulting in swelling, pain, and joint damage if left untreated.
3. Infectious Arthritis: Joint inflammation caused by bacterial, viral, or fungal infections that spread through the bloodstream or directly enter the joint space.
4. Gout: A type of arthritis resulting from the buildup of uric acid crystals in the joints, typically affecting the big toe and characterized by sudden attacks of severe pain, redness, and swelling.
5. Psoriatic Arthritis (PsA): An inflammatory joint disease associated with psoriasis, causing symptoms such as pain, stiffness, and swelling in the joints and surrounding tissues.
6. Juvenile Idiopathic Arthritis (JIA): A group of chronic arthritis conditions affecting children, characterized by joint inflammation, pain, and stiffness.
7. Ankylosing Spondylitis: A form of arthritis primarily affecting the spine, causing inflammation, pain, and potential fusion of spinal vertebrae.
8. Bursitis: Inflammation of the fluid-filled sacs (bursae) that cushion joints, leading to pain and swelling.
9. Tendinitis: Inflammation or degeneration of tendons, which connect muscles to bones, often resulting in pain and stiffness near joints.
These conditions can impact the function and mobility of affected joints, causing discomfort and limiting daily activities. Proper diagnosis and treatment are essential for managing joint diseases and preserving joint health.
Microsatellite instability (MSI) is a genetic phenomenon characterized by alterations in the number of repeat units in microsatellites, which are short repetitive DNA sequences distributed throughout the genome. MSI arises due to defects in the DNA mismatch repair system, leading to accumulation of errors during DNA replication and cell division.
This condition is often associated with certain types of cancer, such as colorectal, endometrial, and gastric cancers. The presence of MSI in tumors may indicate a better prognosis and potential response to immunotherapy, particularly those targeting PD-1 or PD-L1 pathways.
MSI is typically determined through molecular testing, which compares the length of microsatellites in normal and tumor DNA samples. A high level of instability, known as MSI-High (MSI-H), is indicative of a dysfunctional mismatch repair system and increased likelihood of cancer development.
A finger joint, also known as an articulation, is the point where two bones in a finger connect and allow for movement. The majority of finger joints are classified as hinge joints, permitting flexion and extension movements. These joints consist of several components:
1. Articular cartilage: Smooth tissue that covers the ends of the bones, enabling smooth movement and protecting the bones from friction.
2. Joint capsule: A fibrous sac enclosing the joint, providing stability and producing synovial fluid for lubrication.
3. Synovial membrane: Lines the inner surface of the joint capsule and produces synovial fluid to lubricate the joint.
4. Volar plate (palmar ligament): A strong band of tissue located on the palm side of the joint, preventing excessive extension and maintaining alignment.
5. Collateral ligaments: Two bands of tissue located on each side of the joint, providing lateral stability and limiting radial and ulnar deviation.
6. Flexor tendons: Tendons that attach to the bones on the palmar side of the finger joints, facilitating flexion movements.
7. Extensor tendons: Tendons that attach to the bones on the dorsal side of the finger joints, enabling extension movements.
Finger joints are essential for hand function and enable activities such as grasping, holding, writing, and manipulating objects.
The ankle joint, also known as the talocrural joint, is the articulation between the bones of the lower leg (tibia and fibula) and the talus bone in the foot. It is a synovial hinge joint that allows for dorsiflexion and plantarflexion movements, which are essential for walking, running, and jumping. The ankle joint is reinforced by strong ligaments on both sides to provide stability during these movements.
The hip joint, also known as the coxal joint, is a ball-and-socket type synovial joint that connects the femur (thigh bone) to the pelvis. The "ball" is the head of the femur, while the "socket" is the acetabulum, a concave surface on the pelvic bone.
The hip joint is surrounded by a strong fibrous capsule and is reinforced by several ligaments, including the iliofemoral, ischiofemoral, and pubofemoral ligaments. The joint allows for flexion, extension, abduction, adduction, medial and lateral rotation, and circumduction movements, making it one of the most mobile joints in the body.
The hip joint is also supported by various muscles, including the gluteus maximus, gluteus medius, gluteus minimus, iliopsoas, and other hip flexors and extensors. These muscles provide stability and strength to the joint, allowing for weight-bearing activities such as walking, running, and jumping.
The tarsal joints are a series of articulations in the foot that involve the bones of the hindfoot and midfoot. There are three main tarsal joints:
1. Talocrural joint (also known as the ankle joint): This is the joint between the talus bone of the lower leg and the tibia and fibula bones of the lower leg, as well as the calcaneus bone of the foot. It allows for dorsiflexion and plantarflexion movements of the foot.
2. Subtalar joint: This is the joint between the talus bone and the calcaneus bone. It allows for inversion and eversion movements of the foot.
3. Tarsometatarsal joints (also known as the Lisfranc joint): These are the joints between the tarsal bones of the midfoot and the metatarsal bones of the forefoot. They allow for flexion, extension, abduction, and adduction movements of the foot.
These joints play an important role in the stability and mobility of the foot, allowing for various movements during activities such as walking, running, and jumping.
A joint capsule is the fibrous sac that encloses a synovial joint, which is a type of joint characterized by the presence of a cavity filled with synovial fluid. The joint capsule provides stability and strength to the joint, while also allowing for a range of motion. It consists of two layers: an outer fibrous layer and an inner synovial membrane. The fibrous layer is made up of dense connective tissue that helps to stabilize the joint, while the synovial membrane produces synovial fluid, which lubricates the joint and reduces friction during movement.
Microsatellite repeats, also known as short tandem repeats (STRs), are repetitive DNA sequences made up of units of 1-6 base pairs that are repeated in a head-to-tail manner. These repeats are spread throughout the human genome and are highly polymorphic, meaning they can have different numbers of repeat units in different individuals.
Microsatellites are useful as genetic markers because of their high degree of variability. They are commonly used in forensic science to identify individuals, in genealogy to trace ancestry, and in medical research to study genetic diseases and disorders. Mutations in microsatellite repeats have been associated with various neurological conditions, including Huntington's disease and fragile X syndrome.
The shoulder joint, also known as the glenohumeral joint, is the most mobile joint in the human body. It is a ball and socket synovial joint that connects the head of the humerus (upper arm bone) to the glenoid cavity of the scapula (shoulder blade). The shoulder joint allows for a wide range of movements including flexion, extension, abduction, adduction, internal rotation, and external rotation. It is surrounded by a group of muscles and tendons known as the rotator cuff that provide stability and enable smooth movement of the joint.
The sacroiliac (SI) joint is the joint that connects the iliac bone (part of the pelvis) and the sacrum (the triangular bone at the base of the spine). There are two sacroiliac joints, one on each side of the spine. The primary function of these joints is to absorb shock between the upper body and lower body and distribute the weight of the upper body to the lower body. They also provide a small amount of movement to allow for flexibility when walking or running. The SI joints are supported and stabilized by strong ligaments, muscles, and bones.
Temporomandibular Joint Disorders (TMD) refer to a group of conditions that cause pain and dysfunction in the temporomandibular joint (TMJ) and the muscles that control jaw movement. The TMJ is the hinge joint that connects the lower jaw (mandible) to the skull (temporal bone) in front of the ear. It allows for movements required for activities such as eating, speaking, and yawning.
TMD can result from various causes, including:
1. Muscle tension or spasm due to clenching or grinding teeth (bruxism), stress, or jaw misalignment
2. Dislocation or injury of the TMJ disc, which is a small piece of cartilage that acts as a cushion between the bones in the joint
3. Arthritis or other degenerative conditions affecting the TMJ
4. Bite problems (malocclusion) leading to abnormal stress on the TMJ and its surrounding muscles
5. Stress, which can exacerbate existing TMD symptoms by causing muscle tension
Symptoms of Temporomandibular Joint Disorders may include:
- Pain or tenderness in the jaw, face, neck, or shoulders
- Limited jaw movement or locking of the jaw
- Clicking, popping, or grating sounds when moving the jaw
- Headaches, earaches, or dizziness
- Difficulty chewing or biting
- Swelling on the side of the face
Treatment for TMD varies depending on the severity and cause of the condition. It may include self-care measures (like eating soft foods, avoiding extreme jaw movements, and applying heat or cold packs), physical therapy, medications (such as muscle relaxants, pain relievers, or anti-inflammatory drugs), dental work (including bite adjustments or orthodontic treatment), or even surgery in severe cases.
The metatarsophalangeal (MTP) joint is the joint in the foot where the metatarsal bones of the foot (the long bones behind the toes) connect with the proximal phalanges of the toes. It's a synovial joint, which means it's surrounded by a capsule containing synovial fluid to allow for smooth movement. The MTP joint is responsible for allowing the flexion and extension movements of the toes, and is important for maintaining balance and pushing off during walking and running. Issues with the MTP joint can lead to conditions such as hallux valgus (bunions) or hammertoe.
A joint prosthesis, also known as an artificial joint or a replacement joint, is a surgical implant used to replace all or part of a damaged or diseased joint. The most common types of joint prostheses are total hip replacements and total knee replacements. These prostheses typically consist of a combination of metal, plastic, and ceramic components that are designed to replicate the movement and function of a natural joint.
Joint prostheses are usually recommended for patients who have severe joint pain or mobility issues that cannot be adequately managed with other treatments such as physical therapy, medication, or lifestyle changes. The goal of joint replacement surgery is to relieve pain, improve joint function, and enhance the patient's quality of life.
Joint prostheses are typically made from materials such as titanium, cobalt-chrome alloys, stainless steel, polyethylene plastic, and ceramics. The choice of material depends on a variety of factors, including the patient's age, activity level, weight, and overall health.
While joint replacement surgery is generally safe and effective, there are risks associated with any surgical procedure, including infection, blood clots, implant loosening or failure, and nerve damage. Patients who undergo joint replacement surgery typically require several weeks of rehabilitation and physical therapy to regain strength and mobility in the affected joint.
"Foot joints" is a general term that refers to the various articulations or connections between the bones in the foot. There are several joints in the foot, including:
1. The ankle joint (tibiotalar joint): This is the joint between the tibia and fibula bones of the lower leg and the talus bone of the foot.
2. The subtalar joint (talocalcaneal joint): This is the joint between the talus bone and the calcaneus (heel) bone.
3. The calcaneocuboid joint: This is the joint between the calcaneus bone and the cuboid bone, which is one of the bones in the midfoot.
4. The tarsometatarsal joints (Lisfranc joint): These are the joints that connect the tarsal bones in the midfoot to the metatarsal bones in the forefoot.
5. The metatarsophalangeal joints: These are the joints between the metatarsal bones and the phalanges (toes) in the forefoot.
6. The interphalangeal joints: These are the joints between the phalanges within each toe.
Each of these foot joints plays a specific role in supporting the foot, absorbing shock, and allowing for movement and flexibility during walking and other activities.
Biomechanics is the application of mechanical laws to living structures and systems, particularly in the field of medicine and healthcare. A biomechanical phenomenon refers to a observable event or occurrence that involves the interaction of biological tissues or systems with mechanical forces. These phenomena can be studied at various levels, from the molecular and cellular level to the tissue, organ, and whole-body level.
Examples of biomechanical phenomena include:
1. The way that bones and muscles work together to produce movement (known as joint kinematics).
2. The mechanical behavior of biological tissues such as bone, cartilage, tendons, and ligaments under various loads and stresses.
3. The response of cells and tissues to mechanical stimuli, such as the way that bone tissue adapts to changes in loading conditions (known as Wolff's law).
4. The biomechanics of injury and disease processes, such as the mechanisms of joint injury or the development of osteoarthritis.
5. The use of mechanical devices and interventions to treat medical conditions, such as orthopedic implants or assistive devices for mobility impairments.
Understanding biomechanical phenomena is essential for developing effective treatments and prevention strategies for a wide range of medical conditions, from musculoskeletal injuries to neurological disorders.
The temporomandibular joint (TMJ) disc is a small, thin piece of fibrocartilaginous tissue located within the TMJ, which is the joint that connects the mandible (jawbone) to the temporal bone of the skull. The disc acts as a cushion and allows for smooth movement of the jaw during activities such as eating, speaking, and yawning. It divides the joint into two compartments: the upper and lower compartments.
The TMJ disc is composed of several types of tissue, including collagen fibers, elastin fibers, and a small number of cells called fibroblasts. The disc's unique structure allows it to withstand the forces generated during jaw movement and helps to distribute these forces evenly across the joint.
The TMJ disc can become damaged or displaced due to various factors such as trauma, teeth grinding (bruxism), or degenerative joint diseases like osteoarthritis. This can lead to temporomandibular disorders (TMDs) characterized by pain, stiffness, and limited jaw movement.
The acromioclavicular (AC) joint is the joint located between the acromion process of the scapula (shoulder blade) and the clavicle (collarbone). It allows for a small amount of movement between these two bones and participates in shoulder motion. Injuries to this joint, such as AC joint separations or sprains, are common and can occur due to falls, direct blows, or repetitive motions that cause the ligaments that support the AC joint to become stretched or torn.
A mutation is a permanent change in the DNA sequence of an organism's genome. Mutations can occur spontaneously or be caused by environmental factors such as exposure to radiation, chemicals, or viruses. They may have various effects on the organism, ranging from benign to harmful, depending on where they occur and whether they alter the function of essential proteins. In some cases, mutations can increase an individual's susceptibility to certain diseases or disorders, while in others, they may confer a survival advantage. Mutations are the driving force behind evolution, as they introduce new genetic variability into populations, which can then be acted upon by natural selection.
A dislocation is a condition in which a bone slips out of its normal position in a joint. This can happen as a result of trauma or injury, such as a fall or direct blow to the body. Dislocations can cause pain, swelling, and limited mobility in the affected area. In some cases, a dislocation may also damage surrounding tissues, such as ligaments, tendons, and nerves.
Dislocations are typically treated by reducing the dislocation, which means putting the bone back into its normal position. This is usually done with the help of medication to relieve pain and relaxation techniques to help the person stay still during the reduction. In some cases, surgery may be necessary to repair damaged tissues or if the dislocation cannot be reduced through other methods. After the dislocation has been reduced, the joint may be immobilized with a splint or sling to allow it to heal properly.
It is important to seek medical attention promptly if you suspect that you have a dislocation. If left untreated, a dislocation can lead to further complications, such as joint instability and chronic pain.
DNA repair is the process by which cells identify and correct damage to the DNA molecules that encode their genome. DNA can be damaged by a variety of internal and external factors, such as radiation, chemicals, and metabolic byproducts. If left unrepaired, this damage can lead to mutations, which may in turn lead to cancer and other diseases.
There are several different mechanisms for repairing DNA damage, including:
1. Base excision repair (BER): This process repairs damage to a single base in the DNA molecule. An enzyme called a glycosylase removes the damaged base, leaving a gap that is then filled in by other enzymes.
2. Nucleotide excision repair (NER): This process repairs more severe damage, such as bulky adducts or crosslinks between the two strands of the DNA molecule. An enzyme cuts out a section of the damaged DNA, and the gap is then filled in by other enzymes.
3. Mismatch repair (MMR): This process repairs errors that occur during DNA replication, such as mismatched bases or small insertions or deletions. Specialized enzymes recognize the error and remove a section of the newly synthesized strand, which is then replaced by new nucleotides.
4. Double-strand break repair (DSBR): This process repairs breaks in both strands of the DNA molecule. There are two main pathways for DSBR: non-homologous end joining (NHEJ) and homologous recombination (HR). NHEJ directly rejoins the broken ends, while HR uses a template from a sister chromatid to repair the break.
Overall, DNA repair is a crucial process that helps maintain genome stability and prevent the development of diseases caused by genetic mutations.
Rheumatoid arthritis (RA) is a systemic autoimmune disease that primarily affects the joints. It is characterized by persistent inflammation, synovial hyperplasia, and subsequent damage to the articular cartilage and bone. The immune system mistakenly attacks the body's own tissues, specifically targeting the synovial membrane lining the joint capsule. This results in swelling, pain, warmth, and stiffness in affected joints, often most severely in the hands and feet.
RA can also have extra-articular manifestations, affecting other organs such as the lungs, heart, skin, eyes, and blood vessels. The exact cause of RA remains unknown, but it is believed to involve a complex interplay between genetic susceptibility and environmental triggers. Early diagnosis and treatment are crucial in managing rheumatoid arthritis to prevent joint damage, disability, and systemic complications.
DLG1
Sinus tarsi
Sinus tarsi syndrome
Multicentric carpotarsal osteolysis syndrome
Rounded shoulder posture
Down syndrome
Triangular fibrocartilage
Posterolateral corner injuries
Patellar subluxation syndrome
Annular ligament of radius
Ulnar collateral ligament injury of the thumb
Osteoarthritis
Grisel's syndrome
Bennett's fracture
Digital motion X-ray
Ligament
Rolando fracture
Darrach's procedure
Ligamentous laxity
Post-polio syndrome
Bent Nielsen
Osteolysis
Joint replacement
Latarjet procedure
Hypermobility (joints)
Anterior cruciate ligament injury
Joint stability
Sacroiliac joint dysfunction
Limb-sparing techniques
Sprained ankle
Joint Instability Symptoms and Treatment | UPMC
Chronic Ankle Instability - Joint Rehab and Sports Medical Center
Joint Instability and Abrupt Nonlinear Transitions in a Differentially Rotating Plasma - White Rose Research Online
Overview of Patellofemoral Joint Instability - Physiopedia
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Surgical Interventions in Ankle Sprain: Indications for Surgical Intervention, Surgery for Chronic Ankle Instability, Outcomes...
Sacroiliac joint disfunction & associated pathologies - SI-Instability.com
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Shoulder Dislocation Westport | Shoulder Joint Instability | Shoulder Pain Darien
Utility of Volumetric Measurement via Weight-Bearing Computed Tomography Scan to Diagnose Syndesmotic Instability
Shoulder Instability Fairfax, Virginia | Shoulder Joint Dislocation Washington, DC
Dislocated Shoulder Akron, Ohio | Shoulder Joint Instability Canton, Ohio
Carpal Instability Webster, TX | Joint Surgeon Houston, Clear Lake, TX
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Knee Dislocation Cincinnati | Knee Instability | Knee Joint Injuries West Chester OH
Shoulder Dislocation Treatment Rochelle IL | Shoulder Joint Instability Genoa, DeKalb County
AC Joint Dislocation Bristol | Shoulder Pain Kingsport | Joint Instability Johnson City
Elbow Instability Treatment Joliet IL | Elbow Joint Dislocation Chicago, New Lenox
How To Crack My Upper Back By Myself? - Dane101
Combined occupational therapy treatment techniques in the management of left distal radio-ulnar joint (druj) instability with...
Why Does My Dog Have Hock Joint Instability? - Back on Track USA
Mastering Adolescent Knee Pain: A Comprehensive Guide to Patellofemoral Pain & Joint Instability - Physio Network
A Rare Complication of Tuberculous Meningitis Pediatric Anterior Glenohumeral Instability
Glenohumeral osteoarthritis: Symptoms and more
Vice Chairman of the Joint Chiefs on Climate Instability and Political Instability « The Center for Climate & Security
Ligaments24
- Instability happens when tissues - such as muscles, ligaments, and bones - weaken. (upmc.com)
- Strong ligaments hold the bones of joints in place while the joints are in motion and at rest. (upmc.com)
- Injury - such as a fall - can cause a dislocation of a joint or stretch or tear the ligaments. (upmc.com)
- If conservative treatments do not help your joint instability, your doctor may suggest surgery to repair the ligaments so the joint regains stability. (upmc.com)
- A grade two sprain involves further tearing of the ligaments and can cause instability in the ankle joint. (jointrehab.com)
- Dislocation events cause damage to the ligaments ensuring joint stability, most often at the level of their insertion into the glenoid cavity (Bankart lesion) as well as bone injuries when the humeral head has impacted the anterior glenoid. (bone-joint-surgery.com)
- The joint is supported by ligaments, tendons, nerves, blood vessels and muscles that help in movement. (andrewtylermd.com)
- Trauma or a fall on an outstretched arm can injure the wrist ligaments causing carpal instability. (andrewtylermd.com)
- The AC joint is supported and stabilized by the capsule of the joint and two ligaments known as the coracoclavicular ligaments that attach the collarbone with the front portion of the shoulder blade (coracoid process). (lindsayremymd.com)
- The type of AC joint dislocation depends upon the extent of the tear of the acromioclavicular or coracoclavicular ligaments that secure the AC joint in place. (lindsayremymd.com)
- The most common cause of AC joint dislocation is a fall onto the shoulder which injures the surrounding ligaments that stabilize the joint. (lindsayremymd.com)
- Just like in a person, ligaments run on the inside and outside part of the hock joint. (backontrackusa.com)
- The acromioclavicular joint (ACJ) is a diarthrodial joint located between the acromion and the clavicle and is supported by the AC and coracoclavicular (CC) ligaments. (cisejournal.org)
- Many of the methods focus on vertical instability (disruption of the CC ligaments). (cisejournal.org)
- The knee joint includes various ligaments. (ottobock.com)
- A corresponding stability of the ligaments is a prerequisite for proper joint mobility and stabilisation. (ottobock.com)
- The more ligaments are affected, the more unstable the knee joint will be. (ottobock.com)
- When the cruciate ligaments are affected, the resulting instabilities often tend towards an increased anterior and posterior displacement range for the lower leg. (ottobock.com)
- The cause of more complex knee instability often lies in a combination of affected structures, for example, laxity of the interior cruciate ligaments, the collateral ligaments, the flaccid knee joint capsules and/or damage to the menisci. (ottobock.com)
- Suture ligaments around the joint with dissolvable sutures. (healthline.com)
- This type of instability can evolve from a number of different mechanisms, such as lax or over-flexible ligaments around the knee. (sportsinjuryclinic.net)
- Each IP and MCP joint has 2 collateral ligaments and a volar fibrocartilaginous plate. (medscape.com)
- Overall, the IP joints are much more secure than the MCP joints because of the IP joints' bicondylar arrangement and the fact that the collateral ligaments are tight throughout the entire range of motion. (medscape.com)
- Such forces break the volar plate, joint capsule, and at least part of one of the collateral ligaments. (medscape.com)
Cause instability4
- Overuse or repeating a movement over time can cause instability. (upmc.com)
- Ligamentous dysfunction can also cause instability in the facet joints. (facet-joint-pain.com)
- The Sahel in Africa is a classic example, where a small drought over a limited period of time can decimate the crops and cause instability and make that an area fertile for recruitment of extremists because they see no other way. (climateandsecurity.org)
- Meniscal tears and ligament injuries can cause instability and additional wear on the knee joint which, over time, can result in arthritis. (aaos.org)
Symptoms5
- Instability symptoms depend on which joint it affects. (upmc.com)
- Once complete instability has occurred, serious symptoms are virtually guaranteed to exist and the patient will likely be greatly limited in mobility of the affected area without severe consequences. (facet-joint-pain.com)
- The common symptoms of shoulder instability include pain with certain movements of the shoulder, popping or grinding sound that may be heard or felt, swelling and bruising of the shoulder seen immediately following subluxation or dislocation. (robinwestmd.com)
- Most common symptoms of shoulder dislocation are pain and shoulder joint instability. (iangradisarmd.com)
- Your doctor will review your symptoms and medical history and perform a thorough physical examination to check for range of motion, stability, and strength of the joint. (lindsayremymd.com)
Ligament14
- An isolated complete medial ankle sprain with a palpable defect and demonstrable clinical instability is an indication for surgery, particularly if the deltoid ligament is caught in the medial ankle joint. (medscape.com)
- Surgery allows removal of the ligament from the joint and repair of the ligament. (medscape.com)
- Specific tests like the Kirk-Watson test, Pseudo-instability or Ballottement test will help identify the specific ligament injured. (andrewtylermd.com)
- The second reason why your dog's hock joint could be unstable is because of a torn ligament. (backontrackusa.com)
- When a ligament is torn, it can't securely hold the dog's hock joint in place. (backontrackusa.com)
- Horizontal instability (AC ligament disruption) has received less attention [ 1 , 9 , 10 ]. (cisejournal.org)
- Therapy for ligament instability in the knee depends on the cause and degree of severity. (ottobock.com)
- A torn ligament can even cause a complete loss of stability in a joint. (ottobock.com)
- The causes of knee instability can include congenital or acquired ligament weakness with or without the involvement of other, stabilising structures (for example, the joint capsule, articular cartilage, menisci and muscular structures). (ottobock.com)
- In general, the form of knee instability is defined by the number of affected ligament structures. (ottobock.com)
- A brief video on knee instability and a bulging meniscus - the many types of meniscus tears may have ligament damage as a common factor. (caringmedical.com)
- The ulnar collateral ligament is a poorly developed thickening of the joint capsule that arises from the base of the ulnar styloid. (medscape.com)
- Patella dislocation severely compromises this ligament, resulting in patellofemoral instability. (sportsinjuryclinic.net)
- A SLAP lesion involves the labrum and the ligament on the top part of the shoulder joint. (medlineplus.gov)
Diagnosis3
- The diagnosis, prognosis and management of acromioclavicular joint instability remain a point of debate with over 60 types of stabilization procedure described in the published literature. (edu.au)
- If necessary, your doctor will order certain imaging tests such as X-ray, MRI, CT scan, or ultrasound for a detailed evaluation of the joint and surrounding soft tissue structures to confirm the diagnosis. (lindsayremymd.com)
- Distal Radio-Ulnar Joint (DRUJ) instabilities with or without associated conditions (such as mal- united distal radius fracture) is a common diagnosis in the field of orthopedics. (journalcra.com)
Subluxation6
- Patellofemoral instability occurs when the patella moves either partially (subluxation) or completely (dislocation) out of the trochlear groove . (carefirstortho.com.au)
- The dislocation might be a partial dislocation (subluxation) or a complete dislocation causing pain and shoulder joint instability. (iangradisarmd.com)
- Acromioclavicular (AC) joint dislocation is also referred to as acromioclavicular joint separation, subluxation, or disruption. (lindsayremymd.com)
- A prominent, often hemorrhagic, effusion and subluxation and instability of the joint are usually present during early stages. (msdmanuals.com)
- Subluxation, on the other hand, occurs when the loss of continuity between the joints is only partial. (medscape.com)
- Thus, 3 joints per finger exist, all of which have significant motion and require stabilization to prevent subluxation and dislocation. (medscape.com)
Dislocations13
- Shoulder stabilization surgery is performed to improve the stability and function of the shoulder joint and prevent recurrent dislocations. (robinwestmd.com)
- Unfortunately, just like humans, dogs can suffer from injuries such as dog hock dislocations and instability. (backontrackusa.com)
- Dislocations of the shoulder in infants have been reported previously and were either congenital dislocation with associated anomalies of the glenohumeral joint or with dislocations from Erb's palsy or septic arthritis [ 2 ]. (hindawi.com)
- DD has overlapping features with spondyloepiphyseal dysplasia with congenital joint dislocations (SDCD) due to Carbohydrate (chondroitin 6) Sulfotransferase 3 (CHST3) mutations. (nih.gov)
- Ligamentous laxity, muscular hypotonia, and rapid destruction of joint cartilage are common, predisposing to joint dislocations, which also accelerate disease progression. (msdmanuals.com)
- Dislocations of the finger joints involve either the interphalangeal (IP) joint or the metacarpophalangeal (MCP) joint. (medscape.com)
- Dislocations of the distal interphalangeal (DIP) joint of the second through fifth digits are relatively uncommon because of the stability afforded by the DIP joint's flexor and extensor tendinous attachments. (medscape.com)
- [ 1 ] Of the DIP joint dislocations that do occur, most are dorsal and are in combination with an open fracture. (medscape.com)
- Dorsal finger PIP joint dislocations are typically due to a sports-related high-speed force to the distal finger, which, in turn, causes axial stress and hyperextension. (medscape.com)
- Volar finger PIP joint dislocations are extremely uncommon. (medscape.com)
- Dislocations of the MCP joint of the second through fifth digits are relatively uncommon because of the MCP joint's ligamentous anatomy and location at the base of the fingers. (medscape.com)
- Dislocations of the thumb IP joint are rare because of the significant stability of the IP joint. (medscape.com)
- Thumb IP joint dislocations are usually dorsal and usually occur in association with a fracture. (medscape.com)
Double jointed4
- Multidirectional instability - known as being "double jointed" - happens to some people who are born with looser joints than most others. (upmc.com)
- What does it mean to be double-jointed and is it harmful? (primalpictures.com)
- Most people have heard of the term 'double-jointed' but what does it really mean? (primalpictures.com)
- About 30% of the adult population , the majority of which are women, are naturally double-jointed - although its prevalence does decrease with age. (primalpictures.com)
Deformity4
- At this stage , cartilage damage will be visible, the ends of the bones may show some deformity, bone spurs may be apparent, and the space between the bones and the joint will be noticeably narrowed. (medicalnewstoday.com)
- An X-ray of the GH joint at this stage would reveal significant bone spurs, noticeable cartilage damage, severe narrowing of the space between the bones and joint, and deformity at the ends of the bones. (medicalnewstoday.com)
- Progressive deformity is caused by instability of the joints. (upmc.com)
- If you have cervical instability and deformity as the result of odontoid pannus, but are not having neurological compression, the recommended treatment is cranio-cervical fusion to stabilize the joints. (upmc.com)
Elbow13
- What is Elbow Instability? (jasonhurbanekmd.com)
- Elbow instability is a condition in which the elbow joint occasionally slides out of alignment due to the unstable state of the joint. (jasonhurbanekmd.com)
- The elbow joint is made up of three bones: the humerus (upper arm bone), and the radius and ulna (the forearm bones). (jasonhurbanekmd.com)
- There are three bony junctions in the elbow: the proximal radioulnar joint between the radius and ulna, the ulnohumeral joint between the ulna and humerus, and the radiohumeral joint between the humerus and the radius. (jasonhurbanekmd.com)
- Elbow instability usually occurs as the result of an intense elbow injury from a fall, or other trauma with or without elbow joint dislocation. (jasonhurbanekmd.com)
- Your doctor will diagnose elbow instability based on your medical history and a physical examination. (jasonhurbanekmd.com)
- Most cases of elbow instability can be managed by nonsurgical treatment including rest, activity modification, and physical therapy. (jasonhurbanekmd.com)
- You may need an expandable stem radial head arthroplasty if your elbow joint is unstable, if arthritis has made moving your elbow painful or difficult, or if your radial head can't be repaired or reconstructed. (healthline.com)
- RHA is usually recommended if the radial head has been fractured where it meets the elbow joint and other types of treatments - such as physical therapy or corticosteroid injections - haven't worked. (healthline.com)
- Cut an incision in the skin above the elbow joint near the radial head. (healthline.com)
- His areas of clinical expertise include sports injuries, arthroscopic rotator cuff repair, elbow UCL reconstruction, knee ACL reconstruction and meniscus repair, and shoulder instability stabilization surgery. (hopkinsmedicine.org)
- Hinge joints are uniaxial and like hinges on a door can only move in one direction, like your elbow or knee. (primalpictures.com)
- Syringomyelia commonly affects the spine and upper limb joints, especially the elbow and shoulder. (msdmanuals.com)
Injury13
- Because chronic ankle instability is very common and unfortunately prone to re-injury or recurrent problems. (jointrehab.com)
- A May 2022 study ( 3 ) suggests that "Acute lateral ankle sprain is a common injury in athletes and is often associated with decreased athletic performance and, if treated poorly, can result in chronic ankle issues, such as instability. (jointrehab.com)
- Facet joint instability is a potentially very serious result of various types of injury, degeneration and mechanical dysfunction. (facet-joint-pain.com)
- However, since the facet structures are responsible for maintaining overall stability of the spine, linking vertebral bones together and regulating range of spinal motion to prevent injury, instability can still be a very serious matter of concern. (facet-joint-pain.com)
- Since the facet joints have several important components and any of these can be affected by injury or degeneration , there are also multiple types of instability that can exist. (facet-joint-pain.com)
- AC joint dislocation is the separation of the collar bone or clavicle from the acromion (the top portion of the shoulder blade or scapula at the outer edge of the shoulder) due to severe trauma or injury. (lindsayremymd.com)
- Dog hock instability happens when an injury has caused the bones in the hock joint to lose support. (backontrackusa.com)
- There is currently no gold standard surgical treatment for any type of AC injury, especially for horizontal ACJ instability [ 4 , 8 , 10 , 11 ]. (cisejournal.org)
- A radial head arthroplasty (RHA) is done to repair any damage or injury to the radial head so that you can move the joint more freely. (healthline.com)
- Dislocation of the proximal tibiofibular joint is an injury to the joint where the shin bones (tibia & fibula) meet at the knee. (sportsinjuryclinic.net)
- For example, a broken bone may damage the joint surface and lead to arthritis years after the injury. (aaos.org)
- OA begins with a pre-radiographic stage, where the inflammatory cascade is initiated within the joint and initial, reversible cartilage injury becomes evident. (cornell.edu)
- A joint injury can result in joint pain, functional instability, physical inactivity, and poor quality of life. (lu.se)
Hypermobility12
- However, there is a lack of research on the effects of balance training in CAI with generalized joint hypermobility (GJH). (biomedcentral.com)
- However, there is still a concern about the clinical outcomes of balance training for CAI patients with generalized joint hypermobility (GJH). (biomedcentral.com)
- Generalized joint hypermobility (GJH) is characterized by increased movement in multiple joints beyond normal ranges expected in a given population [ 8 ]. (biomedcentral.com)
- to evaluate temporomandibular joint, mastication and deglutition in asymptomatic women with and without generalized joint hypermobility and the association between these variables. (scielo.br)
- the clinical evaluation of the temporomandibular joint showed predominance of joint sounds during jaw movement (52.9%) and mouth opening deviation (76.5%) in the hypermobility group, without statistical significant difference. (scielo.br)
- asymptomatic women showed evidence that hypermobility predisposes the occurrence of mouth opening deviation and joint sounds. (scielo.br)
- Then you likely have hypermobility of your joints, with a greater range of motion than the general public, making them extremely flexible in certain areas. (primalpictures.com)
- However, some types of genetically-inherited joint hypermobility can also be bad for you and an underlying cause of conditions such as joint hypermobility syndrome (JHS), Ehlers-Danlos syndrome and other hypermobility spectrum disorders (HSD) we will explore later in this article. (primalpictures.com)
- Which type of joints are most prone to hypermobility? (primalpictures.com)
- The most commonly affected joints of joint hypermobility are your elbows, wrists, fingers and knees. (primalpictures.com)
- And out of the three main types of joints we have in our body - fibrous, cartilaginous and synovial - the synovial joints are most prone to hypermobility. (primalpictures.com)
- Aim: This study aimed to verify the presence of generalized joint hypermobility (GHJ) in individuals with temporomandibular disorders (TMD) and asymptomatic individuals and to compare the activity of their masticatory muscles. (bvsalud.org)
Unstable10
- Our skilled surgeons are leaders in repairing unstable joints. (upmc.com)
- Instability in any bodily structure is never good, but when the actual spine becomes unstable, the patient might suffer widespread problems with pain, posture and basic physical functionality. (facet-joint-pain.com)
- Unstable zygapophyseal joints are not the worst type of spinal instability by any means, since these joints are not really weight bearing. (facet-joint-pain.com)
- We will detail the underlying mechanisms that can result in unstable apophyseal joints and what can be done to restore stability in the affected joints. (facet-joint-pain.com)
- Facet tissues can become temporarily or permanently unstable due to soft tissue inflammation that can swell parts of joint to the extent where they misalign or do not move properly or at all. (facet-joint-pain.com)
- Conservative treatment is usually effective, but in cases of a severely unstable joint, surgery is required. (lindsayremymd.com)
- There are two reasons why your dog's hock joint might be unstable. (backontrackusa.com)
- Individuals with severe joint instability, as kinesiotape may not provide sufficient support for highly unstable joints. (who.int)
- She was unable to actively flex or oppose this thumb, and the first carpometacarpal joint was unstable. (medscape.com)
- Radiograph of N.D. preoperatively, demonstrating thumb hypoplasia and an unstable carpometacarpal joint. (medscape.com)
Potential for instability2
- In return, this mobility results in a great potential for instability. (bone-joint-surgery.com)
- If you extend that argument to the kinds of things that might happen if we see tidal rises, if we see increasing weather patterns of drought and flood and forest fires and other natural events that happen inside of our environment, then we're gonna have to be prepared for what that means in terms of the potential for instability in regions of the country where those impacts happen. (climateandsecurity.org)
Pain12
- I'm finding it difficult to find any braces that can help my joint instability without cause even more pain.Any firm constriction around any joint on my body hurts almost as much as the joint itself. (alike.health)
- Back on Track makes pain relief and joint support for your dog that much easier. (backontrackusa.com)
- A person may experience severe pain, constant inflammation, friction in the joint, and recurring stiffness. (medicalnewstoday.com)
- Knee instability can cause a feeling of instability, actual instability, pain and irritation. (ottobock.com)
- Initially, instability may be expressed by uncertainty while walking or by pain when more weight is placed on the joint. (ottobock.com)
- Pannus is a type of extra growth in your joints that can cause pain, swelling, and damage to your bones, cartilage, and other tissue. (upmc.com)
- It is a common cause of gradual onset knee pain and joint stiffness. (sportsinjuryclinic.net)
- Many people with arthritis note increased joint pain with changes in the weather. (aaos.org)
- Sex, age, ethnicity of the child and the presence of signs suggestive of atlanto-axial instability, as reported by caregivers, such as neck pain, difficulty walking, weakness in the lower limbs, fatigue, difficulty with balance, urinary and fecal incontinence and projectile vomiting were studied. (bvsalud.org)
- Treatment consists of external or sometimes surgical joint stabilization to slow disease progression and reduce pain. (msdmanuals.com)
- However, because the ability to sense pain is commonly impaired, the degree of pain is often unexpectedly mild for the degree of joint damage. (msdmanuals.com)
- During later stages, pain may be more severe if the disease has caused rapid joint destruction (eg, periarticular fractures or tense hematomas). (msdmanuals.com)
Fractures3
- Fractures need to be treated with surgery using pins, wires, and screws to repair the fracture and to reduce the development of arthritis in the joint. (backontrackusa.com)
- Hemorrhagic joint effusions and multiple small fractures can occur, accelerating disease progression. (msdmanuals.com)
- Fractures and bony healing may produce many loose pieces of cartilage or bone that can slough into the joint, causing a coarse, grating, often audible crepitus usually more unpleasant for the observer than for the patient. (msdmanuals.com)
Stability8
- The model's differential rotation yields stability in the absence of a magnetic field, but if a magnetic field is present, a joint instability is observed. (whiterose.ac.uk)
- Objective metrics to assess knee joint instability are lacking, making it difficult to target therapies aiming to improve stability. (eur.nl)
- Sometimes, the various criteria of joint rating can become very atypical, but stability can still be maintained. (facet-joint-pain.com)
- However, when the rating characteristics of the joint continue to progress towards more atypical degrees, there is an ever-increasing chance that the joint will lose structural stability and fall into dysfunction. (facet-joint-pain.com)
- Stability is a rating of predictability and volatility in the joint. (facet-joint-pain.com)
- The goal of conservative treatment for shoulder instability is to restore stability, strength and a full range of motion. (robinwestmd.com)
- Due to the improved ACJ stability with the two-hole technique, it appears to be a more suitable option than the loop technique for AC joint reduction. (cisejournal.org)
- After endonasal decompression of the neural structures, you will need a cranio-cervical fusion to prevent recurrence and promote stability of the joints to avoid further neurological deterioration. (upmc.com)
Chronic6
- A May 2022 study ( 2 ) suggested: "Chronic ankle instability in athletic populations appears to be highly associated with declines in functional performance and to a somewhat lesser extent, ankle range of motion, strength and muscle endurance measures. (jointrehab.com)
- This may suggest that optimal rehabilitation for athletes with Chronic ankle instability may require a greater focus on improving sprinting speed and change of direction ability in the mid to latter stages of rehabilitation, with regular assessments of these functional performance tests necessary to guide the progression and overload of this training. (jointrehab.com)
- According to a review by Safran et al, more than 20 different delayed surgical procedures are available for chronic ankle instability and sprains. (medscape.com)
- 11-15-13 - This is my HyProCure Surgery story to reduce the chronic subluxing Talus bone, realign my Subtalar joint and stabilize my rear foot. (si-instability.com)
- Balance training is the first choice of treatment for chronic ankle instability (CAI). (biomedcentral.com)
- Rheumatoid arthritis is a chronic disease that attacks multiple joints throughout the body, including the knee joint. (aaos.org)
Occurs5
- Instability occurs only to the carpal bones. (andrewtylermd.com)
- Knee dislocation is a condition that occurs when the bones that form the knee joint, namely the femur or thigh bone get separated from the shin bone. (branammd.com)
- A dislocation occurs when the ends of your bones are partially or completely moved out of their normal position in a joint. (lindsayremymd.com)
- Acute joint dislocation sometimes occurs also. (msdmanuals.com)
- Dislocation of a joint occurs when traumatic forces cause complete loss of continuity between the joint's 2 articulating surfaces. (medscape.com)
Tissues4
- He or she will move the joint to test the strength and looseness of the tissues surrounding the joint. (upmc.com)
- Since the entire spinal anatomy is interdependent and relies on every other part to correctly perform their anatomical function, instability in one joint can actually affect a wide range of related tissues and negatively impact overall physical function. (facet-joint-pain.com)
- Shoulder arthroscopy is surgery that uses a tiny camera called an arthroscope to examine or repair the tissues inside or around your shoulder joint. (medlineplus.gov)
- Inspects all the tissues of your shoulder joint and the area above the joint. (medlineplus.gov)
Spinal2
- This essay explores spinal instability that is expressed in the facet joints. (facet-joint-pain.com)
- Instability can be very painful and might cause a cascade effect of problems thorough the spinal anatomy. (facet-joint-pain.com)
Clinical4
- Clinical cases of instability can be classified according to the degree of instability, the direction of instability, and the circumstances under which they occur like congenital, neuromuscular, voluntary, traumatic, and atraumatic recurrent instability [ 1 ]. (hindawi.com)
- Clinical tests can confirm or rule out knee instability. (ottobock.com)
- When knee instability is confirmed using clinical test procedures, further examinations often follow if there are painful instabilities with or without movement limitations. (ottobock.com)
- In addition to a safety study we are currently conducting we expect these studies to provide valuable information into the viability of a future clinical trial in equine patients and begin to understand the mechanisms behind lubricin's role in joint homeostasis and healing. (cornell.edu)
Painful2
- In the physical examination of her shoulder, painful anterior inferior instability was observed with 90 degrees of abduction and 70 degrees of external rotation. (hindawi.com)
- A knee joint affected by arthritis may be painful and inflamed. (aaos.org)
Distal4
- We hypothesized that WBCT volumetric measurement of the distal syndesmosis would be increased on the injured as compared to the contralateral uninjured side and that these 3-dimensional (3D) calculations would be a more sensitive determinant than 2-dimensional (2D) methodology among patients with syndesmotic instability. (nih.gov)
- As a result, this study intend to report the efficacy of combined occupational therapy (OT) intervention modalities in DRUJ instability by presenting Mr J, a known case of left DRUJ instability (with left mal-united distal radius fractured). (journalcra.com)
- Therefore the outcome of this case study shows that, using combined OT modalities in DRUJ instability management do have greater impact on patient with DRUJ instabilities with mal-united distal radius fracture. (journalcra.com)
- The distal radioulnar joint (DRUJ) is the articulation of the distal radius and ulnar head. (medscape.com)
Congenital1
- Anatomical defect- Flat feet or fallen arches and congenital abnormalities in the shape of the patella bone can cause misalignment of the knee joint. (carefirstortho.com.au)
Stabilization surgery1
- When conservative treatment options fail to relieve shoulder instability, your surgeon may recommend shoulder stabilization surgery. (robinwestmd.com)
Treatments1
- UPMC Orthopaedic Care provides a range of treatments for joint instability . (upmc.com)
Disorders2
- The temporomandibular joint was examined by Research Diagnostic Criteria for Temporomandibular Disorders instrument, and mastication and deglutition functions were assessed through a myofunctional orofacial assessment. (scielo.br)
- More specifically, this project was aimed to understand how a stooped work task that resembled crop harvesting work can increase the risk of work-related low back disorders by analyzing various biomechanical signs of muscle fatigue and joint instability in a human subject experimental study. (cdc.gov)
Surgical2
- Virtually all forms of facet instability can be rectified using focused surgical interventions. (facet-joint-pain.com)
- Arthroscopy is a surgical procedure in which an arthroscope, a small flexible tube with a light and video camera at the end, is inserted into a joint to evaluate and treat the condition. (robinwestmd.com)
Surgery3
- After instability surgery, you may need to keep the affected joint still. (upmc.com)
- The background to my Peripheral Nerve Surgery story is also indirectly connected with my Malalignment Story and my SI-Instability/Surgery Story starting over 10 years ago. (si-instability.com)
- Surgery involves placing screws in the bones above and below the hock joint. (backontrackusa.com)
Recurrent5
- [2] note that first-time dislocation may be managed conservatively (i.e. through rehabilitation, bracing, and activity modification), but as many as 36 percent of patients will have recurrent instability on the same leg. (physio-pedia.com)
- Recurrent patellofemoral instability is relatively common. (physio-pedia.com)
- [9] Individuals who experience recurrent patellofemoral instability often have specific pathoanatomical features which predispose them to patellar dislocation. (physio-pedia.com)
- We describe a 12-year-old child with a recurrent anterior instability of the shoulder, which developed after tuberculous meningitis at 18 months of age. (hindawi.com)
- This is the first case report of a child with recurrent anterior shoulder instability due to neuromuscular imbalance that developed as a sequel of tuberculous meningitis episode. (hindawi.com)
Arthritis4
- Carpal instability can also be caused due to fracture of the wrist bones or degenerative arthritis. (andrewtylermd.com)
- When rheumatoid arthritis attacks, it usually begins in the synovium, a type of tissue that lines the joint capsule. (upmc.com)
- Arthritis is inflammation of one or more of your joints. (aaos.org)
- In rheumatoid arthritis, the synovial membrane that covers the knee joint begins to swell. (aaos.org)
Dysfunction1
- Most varieties of facet joint instability are caused by mechanical dysfunction and will either resolve naturally as the bone spurring wears down or will need to be treated surgically. (facet-joint-pain.com)
Anterior2
- On WBCT scan, 2D measurements of the syndesmosis joint were first measured 1 cm above the joint line in the axial plane via syndesmotic area and distances between the anterior, middle, and posterior quadrants. (nih.gov)
- Shoulder joint often dislocates in the forward direction (anterior instability) and it may also dislocate in backward or downward direction. (iangradisarmd.com)
Tear2
- Osteoarthritis, is wear and tear, in the knee joint. (sportsinjuryclinic.net)
- The Bankart lesion is a tear on the labrum in the lower part of the shoulder joint. (medlineplus.gov)
Treatment7
- Why choose UPMC for instability treatment? (upmc.com)
- The treatment of instability depends on the location of the joint. (upmc.com)
- These alterations in neuromechanics could assist in the assessment of knee joint instability in patients, to provide treatment options accordingly. (eur.nl)
- The main reason for this is unknown but probably because of the scanty evidence to show the impact of various occupational therapy treatment modalities in treating DRUJ instability. (journalcra.com)
- We applied arthroscopic treatment and stabilized the joint. (hindawi.com)
- When there is no neurological compromise, the recommended treatment is cranio-cervical fusion to stabilize the joints. (upmc.com)
- The same treatment principles apply for secondary patellofemoral instability as they do for primary instability. (sportsinjuryclinic.net)
Sacroiliac1
- There is hope for Sacroiliac (SI) Instability and its associated pathology. (si-instability.com)
Tendons4
- Muscles and tendons hold the bones of the joints in place most often when moving. (upmc.com)
- The rotator cuff is a group of muscles and their tendons that form a cuff over the shoulder joint. (medlineplus.gov)
- These muscles and tendons hold the arm in the shoulder joint. (medlineplus.gov)
- Joint support is facilitated by these structures as well as the surrounding tendons. (medscape.com)
Physical3
- Dr Khatib evaluates the source of patellofemoral instability based on your medical history and physical examination. (carefirstortho.com.au)
- It can be used by physical therapists to measure the initial range of motion of a joint, and how it increases with therapy. (primalpictures.com)
- We all know that physical activity is important for both our general health and our joints, muscles, and bones. (lu.se)
Patellar2
- When and how far to move the tibial tuberosity in patients with patellar instability. (hopkinsmedicine.org)
- Characterization of patellar maltracking using dynamic kinematic CT imaging in patients with patellar instability. (hopkinsmedicine.org)
Bones7
- Once they are weak, they no longer hold the bones of the joint in proper place. (upmc.com)
- Carpal instability is the loss of alignment of the carpal bones and/or radioulnar joint. (andrewtylermd.com)
- This holds the bones of the hock joint together. (backontrackusa.com)
- The ends of the three bones that form the knee joint are covered with articular cartilage, a smooth, slippery substance that protects and cushions the bones as you bend and straighten your knee. (aaos.org)
- The bones at this joint are concave in one direction and convex in the other direction so they sit one on top of the other. (primalpictures.com)
- Gliding joints are uniaxial and are found in the intercarpal bones like the spine. (primalpictures.com)
- These bones are relatively flat and slide over each other from side to side so the movement in this type of joint is limited. (primalpictures.com)
Fracture2
- Instability might also contribute to worse facet-related conditions, such as dislocation or fracture of the joint structure. (facet-joint-pain.com)
- The first is because of a bone fracture in the joint. (backontrackusa.com)
Movements1
- Meanwhile, as joints progresses towards greater degrees of instability, their movements become less predictable, less regulated and much more volatile. (facet-joint-pain.com)
Lesions1
- As OA progresses, cartilage lesions become irreversible, and radiographic changes such as osteophytosis, joint space collapse, and subchondral bone sclerosis develop. (cornell.edu)
Synovial6
- No signs of joint tuberculosis nor synovial problems were detected. (hindawi.com)
- A Synovial plica is a fold of the synovial membrane in the knee joint. (sportsinjuryclinic.net)
- The knee joint is surrounded by a thin lining called the synovial membrane. (aaos.org)
- The six types of synovial joints all have different degrees of mobility, and the range of motion refers to the capability of these joints to stretch to their fullest extent. (primalpictures.com)
- In Aim 2, the molecular mechanisms will be investigated in healthy equine fetlock joints treated with rEqLub through the use of synovial fluid proteomics and synovial membrane and articular cartilage transcriptomics. (cornell.edu)
- During advanced stages, the joint is swollen from bony overgrowth and massive synovial effusion. (msdmanuals.com)
Cartilage6
- The glenoid is surrounded by a ring of fibrous cartilage called the labrum for stabilization of the shoulder joint. (aliashrafmd.com)
- There may be slight damage to the cartilage and a narrowing of space between the joint and the bone. (medicalnewstoday.com)
- Over the long term, this is often followed by arthrosis, or more rapid degeneration of the articular cartilage in the joint. (ottobock.com)
- In osteoarthritis, the cartilage in the knee joint gradually wears away. (aaos.org)
- Loose fragments of cartilage and other tissue can interfere with the smooth motion of joints. (aaos.org)
- The labrum is the cartilage that lines the rim of the shoulder joint. (medlineplus.gov)