Abstract
Synovial Osteochondromatosis is a disease which forms osteochondroma in the synovial membrane, and free bodies. The disease breaks out in the knee and elbow joint mainly but rarely in the hip joint. The classification of Milgram is famous. We experienced two men and one woman which had the disease and their age range was 24 to 44 years old. All patients were treated by removal of the free bodies and synovectomy and classified Stage 2 of Milgram. Only a 24-year-old patient felt pain again due to left free bodies. For diagnosis of the disease, CT, MRI, and arthrography are more useful. Conservative treatments are not effective, and operative treatments are selected in general. A treatment that removes free body completely and resects synovium adeduately is desirable. Dislocation of the femoral head is considered necessary for this treatment, but should be avoided because it may cause avascular necrosis of the femoral head. We experienced three cases of synovial osteochondromatosis and treated by operation without dislocation of the femoral head. This method can prevent complications of the avascular necrosis of the femoral head.
