Legg-Calve-Perthes disease is a hip disorder of undetermined etiology, occurring in children and charaterized by necrosis and repair of the proximal femoral epiphysis. Its etiology and treatment continue to command intense interest among orthopaedic surgeons. It is the purpose of this paper to evaluate the result of our experience in the selected patients with Legg-Calve-Parthes disease treated by innominate osteotomy, In this study, six cases of Legg-Calve-Perthes disease treated at Severance Hospital from March 1976 to November 1978 were analysed clinically, and gratifying results were obtained.