Of 31 patients who underwent open reduction and innominate osteptomy due to congenital hip dislocation, 39 hips were assessed by means of Barrett. modified Severin and Trevar evaluation criteria. The mean age of the patients was 26.8 (17-50) months and the average follow-up period was 44 (12-96) months. The total number of the excellent and good results obtained though Barrett, Trevar and modified Severin's evaluation criteria were 89.7%,87.1%,89.7% respectively. We established avasculer necrosis of 17.9% in our patients. This include 12.8% grade i and 5. 1 % grade III avasculer necrosis of the femoral head. We are of the opinion that utilization of different methods in the assesment of the results of open reduction and innominate osteotomy performed in the treatment of congenital hip dislocation has on the results and that this type of treatment is a proper method to be chosen in patients over 1.5 years old.