Reichel (1900) described a disorder in which foci of cartilage form in the synovial membrane of joints, tendon sheaths, and bursae by metaplasia of the connective tissue. These foci may become detached from the synovial membrane and enter ... Reichel (1900) described a disorder in which foci of cartilage form in the synovial membrane of joints, tendon sheaths, and bursae by metaplasia of the connective tissue. These foci may become detached from the synovial membrane and enter the joint cavity as floating cartilage. If calcification occurs, these bodies can be detected by x-ray. Bone erosions may occur, particularly in the joints with a tight capsule (Murphy et al., 1962). Clinical symptoms include pain, swelling, crepitus, and palpable loose bodies. Steinberg et al. (1989) reported a family in which 3 members had this disorder; their habitus was tall and thin. Felbel et al. (1992) described a family in which at least 3 members and presumably 2 others had the articular disorder combined with dwarfism. All affected members were below the 3rd percentile in height. Two children of an affected male were dwarfed but were perhaps too young to show the joint abnormalities.