Associated with Unresolved Osgood-Schlatter Disease

sgood-Schlatter disease is caused by an avulsion of a portion of the developing ossification center of the tibial tubercle in young athletes. Approximately 10% of ossicles fail to unite with the tibial tubercle, and patients with Osgood-Schlatter disease continue to have anterior knee pain brought on by even mild activity1. Patients usually be-come asymptomatic after skeletal maturity, although they have a prominent mass in the anterior aspect of the proximal part of the tibia. Synovial osteochondromatosis is a benign condition that is characterized by the formation of multiple chondral or osteochondral nodules in the synovial membrane or intraar-ticular space. When this phenomenon occurs in the bursa around a joint, the condition is called bursal osteochondro-matosis. Most cases of synovial and bursal chondromatosis develop without any antecedent major trauma; however, rare cases in which the conditions have occurred following repeat minor trauma have been reported2-6. Some authors have re-ported the development of bursal osteochondromatosis around an osteochondroma7-9. We report the case of a patient who had infrapatellar bur-sal osteochondromatosis in association with unresolved Osgood-O Fig. 1 Lateral radiograph of the right knee, showing an osseous mass attached to the tibial tubercle. The mass extends to the inferior aspect of the patella and is surrounded by several ossified fragments