Twenty cases of traumatic dislocation of the hip joint were followed up for six months to seven years. Of twenty cases, 8 were simple dislocations, 6 were fracture-dislocations, and 6 were central dislocations. The clinical results were satisfactory in 18 cases (90%). In simple dislocations, early closed reduction was acceptable. But in fracture-dislocations, the satisfactory results were obtained by additional operation, such as the removal of loose fragments or the internal fixation of the fragment of acetabulum, soon after the closed reduction. In our study, the traumatic osteoarthritis occurred mostly due to a loose fragment in the joint space. At the time of follow up study, aseptic necrosis of the femoral head was not seen.
