All patients were normal but one lamed lightly and another one still had 6 degrees obliquity of pelvis postoperatively.

• (1)经随访，手术后除1例遗留轻微跛行，1例遗留约6°骨盆倾斜外，余病人均步态正常，骨盆倾斜消失，达到临床治愈。