The Salter Innominate Osteotomy for the Congenital Dislocation of the Hip

Abstract

Thirty-two Salter innominate osteotomies that were performed in thirty-one patients, 4 boys and 27 girls, between 1974 and 1988 were roentgenologically reviewed. On the plane A-P radiograph the α-angle and the center-edge angle of Wiberg were measured pre- and postoperatively. The preoperative complications were as follows: the acetabular dysplasia (32 hips); the subluxation (11 hips); the lateralization (12 hips); and the dislocated hip (9 hips).
At late review, twenty-one hips (20 patients) were assessed by the Severin's criteria. Fifteen of twenty-one hips (71%) were rated as group I or II. In six unsatisfactory hips, the radiological results especially the CE angles were not improved remarkablly. Main purpose of this procedure was to gain the acetabular coverage of the femoral head, however, it was thought to be one of the important factors influencing the end results to increase the CE angle, in other words to sink the femoral head into the joint. We combined the open reduction with this osteotomy to make the femoral head in good position for 11 hips with concomitant subluxation.
Thirteen of eighteen hips that developed avascular necrosis preoperatively were followed for at least 5 years, and 8 of 13 hips got the satisfactory results.
Though it was difficult to predict their prognosis, the Slater's osteotomy might be useful for these heads because of improvement of the containment.