Study of Mechanism and Treatment of Gluteal Muscle Contracture with Obliquity of Pelvis

Objective: To analyse the mechanism of gluteal muscle contrature(GMC) with obliquity of pelvis, then using it guiding the treatment. Method: 1. From Jan. 1990 to Jan. 2000, we applied surgical treatment to 31 cases of GMC with obliquity of plevis. In operation we emphasized in the situation of contracture of gluteal muscles, then cut the contracture tract or extended the tendon. 2.To study the mechnism of GMC with obliquity of pelvis by analysing the anatomy of gluteal muscles. Result: All patients were normal but one lamed lightly and another one still had 6 degrees obliquity of pelvis postoperatively. By anatomic research and the situation of contracture tracts, we found that the contracture of middle gluteal muscle was the reason of obliquity of pelvis but maximus muscle would not cause it. Conclusion: Contracture of middle gluteal muscle was the mechanism of GMC with obliquity of pelvis. Patients should be operated immediately and could get fine results.