Carpometacarpal synovial osteochondromatosis

Synovial osteochondromatosis of the wrist is a rare benign disease with only a limited number of case reports and series in the literature. Synovial osteochondromatosis most commonly involves the larger joints, such as knee, shoulder, and elbow and rarely involves the hand and wrist. In literature, the most commonly described location in the wrist is the distal radio-ulnar joint, followed by the interphalangeal and metacarpophalangeal joints. We report a rare case of carpometacarpal synovial osteochondromatosis of the wrist clinically suspected as carpometacarpal arthritis.