SYNOVIAL OSTEOCHONDROMATOSIS OF THE DISTAL RADIOULNAR JOINT

Synovial osteochondromatosis is an uncommon lesion characterized by ca rtilagenous and osseous metaplasia of joint synovium. It is typically monarticular, affecting large joints such as the knee and hip, althoug h it has also been described in the ankle, elbow and shoulder. It is e xceptionally rare in the hand, but has been reported involving the ten osynovium of the digits and the wrist. We report a rare case of synovi al osteochondromatosis involving the distal radio-ulnar joint in a 16- year-old man.