Transtrochanteric rotational osteotomy was performed on 10 hips and vascularized pedicled: liac bone grafts were performed on six hips with avascular necrosis of the femoral head (ANF).
The average age at surgery was 37.2 years (ranging from 20 to 65 years).
The follow up period was 1 to 17 years postoperatively (average 5.4 years).
The basic diseases of ANF were idiopathic in eight hips, steroid-induced in five hips and alcohol in three hips.
12 hips were classified as Stage II and 4 hips were stage III.
Type I-B was five hips, type I-C was nine hips, type II was one hip and type III was one hips.
The JOA hip score improved from 60.8 to 77.1 postoperatively in the transtrochanteric rotational osteotomy group and from 60.2 to 79.7 in the vascularized pedicled iliac bone graft group.
The result of transtrochanteric rotational osteotomy was favourable, especially in type I-B hips. The result obtained using the vascularized pedicled iliac bone graft was usually satisfactory but variable.
