ABSTRACT
Objective To observe the long term results of intertrochanteric varus medial displacement osteotomy(IVMDO) for Perthes disease. Methods Thirty eight patients with Perthes disease treated with IVMDO were reviewed. The results were evaluated based on a criteria made by the authors including clinical and radiographic parameters. The duration of follow up ranged from 3 to 15 years, with an average of 7 years. Results Fifteen patients were evaluated as having excellent result, 17 good, 3 fair and 3 poor respectively. The overall excellent or good rate was 84.2%. Considering the relationship between the outcome and staging of the disease, the overall excellent or good rate was 94.7% in stage Ⅱ lesion, 85.7%in stage Ⅲ lesion, and 40.0% in stage Ⅳ lesion. Conclusion The treatment of Perthes disease with IVMDO has the advantages of simple manipulation, less trauma and good results, and is worthy of populariztion.