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Osteochondritis dissecans (OCD or OD) is a joint disorder primarily of the subchondral bone in which cracks form in the articular cartilage and the underlying subchondral bone. [1] OCD usually causes pain during and after sports. In later stages of the disorder there will be swelling of the affected joint that catches and locks during movement.
The subchondral bone volume increases and becomes less mineralized (hypo mineralization). [47] All these changes can cause problems functioning. The pain in an osteoarthritic joint has been related to thickened synovium [48] and to subchondral bone lesions. [49]
In many cases, there is pain and discomfort in a joint which increases over time. It can affect any bone, and for in about half of affected people, multiple sites are damaged. [5] Avascular necrosis most commonly affects the ends of long bones, such as the femur.
The main symptom is pain, particularly with gripping and pinching. [7] [8] This pain is often described as weakness, but true weakness is not a part of this disease. People may also note a change in shape of the thumb. [7] [8] Some people choose surgery, but most people find they can accommodate trapeziometacarpal arthritis. [9] [10] [11]
Osteochondritis is a painful type of osteochondrosis where the cartilage or bone in a joint is inflamed. [1]It often refers to osteochondritis dissecans (OCD). The term dissecans refers to the "creation of a flap of cartilage that further dissects away from its underlying subchondral attachments (dissecans)".
The cause is unknown. These were first recognised as a distinct entity in 1910. [12] Jaffe and Lichtenstein provided a detailed discussion of simple bone cysts in 1942. [11] The traumatic bone cyst, also referred to as a simple bone cyst or hemorrhagic cyst, is a pseudocyst that most commonly affects the mandible of young individuals.
Synovial osteochondromatosis (SOC) (synonyms include synovial chondromatosis, primary synovial chondromatosis, synovial chondrometaplasia) is a rare disease that creates a benign change or proliferation in the synovium or joint-lining tissue, which changes to form bone-forming cartilage. In most occurrences, there is only one joint affected ...
The cysts may intrude into the spine, which may cause pain and dysesthesia in distant extremities. [ 20 ] Cystic adventitial disease , in which a cyst occurs within the popliteal artery near the knee, has been proposed recently to occur by an articular mechanism, with a conduit leading from the joint, similar to the development of ganglion ...