Keijiro Fukumoto

The Results of Transtrochanteric Curved Varus Osteotomy in the Treatment of Osteoarthritis with Subluxation of the Hip

In 1969 Nishio devised transtrochanteric curved varus osteotomy in the treatment of subluxation of the hip. We performed this procedure on 50 hips in 46 patients from 1976 through 1987 at our hospital. We studied 34 hips in 30 patients in these patients which were followed for more than 2 years.Radiological results showed that 19 hips were good. 12 hips were poor and other 3 hips had little change. Poor group in radiological results did not remark improvement of pain score in clinical results. 3 hips showed femoral head necrosis and another 3 hips showed lateral subluxation of the head. This procedure has been useful to early stage of osteoarthritis with subluxation of the hip, especially unilateral type.

An Idea of Acetabular Bone Graft in the Treatment of Coxarthrosis with Bipolar Endoprosthesis

Up to July, 1988 one hundred eleven patients (124 hips) with coxarthrosis were treated by bipolar endoprosthetic replacement. Of them thirty patients (32 hips) required additional acetabuloplasty with bone graft from the acetabular dysplasia.In this paper an idea of bone grafting using the excised autogenous femoral head-neck block is reported. Reviewing the cases CE angle of the bipolar head before acetabuloplasty was average 13.4 degrees (range: -20-40 degrees) and the angle improved to average 54.1 degrees after bone grafting. To evaluate the influence of excessive bone coverage on the hip motion the cases were divided into the groups at intervals of 10 degrees increase of CE angle from 40 degrees. There was no significant restriction of flexion and abduction of the hip joint by increasing bone coverage of the bipolar head.