benzoic acid ester

Synovial chondromatosis is a disease affecting the synovium, a thin flexible membrane around a joint.

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 ...