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What is Synovial chondromatosis and explain in detail?
Synovial chondromatosis is a locally aggressive bone tumor of the cartilaginous type. It consists of several hyaline cartilaginous nodules and has the potential of becoming cancerous.

Signs and symptoms
People usually complain of pain in one joint, which persists for months, or even years, does not ease with exercise, steroid injection or heat treatment, shows nothing on X-ray, but shows a definite restriction of movement.
There are 3 defined stages to this disease:

early: no loose bodies but active synovial disease;
transitional: active synovial disease, and loose bodies;
late: loose bodies but no synovial disease;In the early stages of the disease it is often confused with tendinitis and/or arthritis. Once it reaches transitional the loose bodies become apparent with X-ray in greater than 70% of cases, with MRI often showing where xray fails. In experienced hands, ultrasound is also useful for the diagnosis.Rare and little known, with currently no known cure, the disease gradually forms blisters in the thin flexible membrane of the synovium, which calcify and enlarge. These nodules eventually break free and float around the joint space becoming larger – these add to the discomfort and stiffness of the joint. The affected tissue will show up as a semi-solid mass in an MRI scan, final diagnosis is usually confirmed by taking a biopsy. The disease generally affects only one of the larger weight bearing joints (hip, ankle, knee) – although the elbow, and wrist can also be affected. It rarely involves the temporomandibular joint (TMJ) and most publications are case reports.Synovial chondromatosis occurs twice as commonly in males as females and usually in their forties