The experience of femoral lengthening and distal transfer of the greater trochanter in coxa vara with leg length discrepancies or coxa vara with acetabular dysplasia.

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Femoral lengthening operations in the pertrochanteric region with distal transfer of greater trochanter were performed on two hips of coxa vara and plana, seven hips of coxa vara with acetabular dysplasia which were combined simultaneously with Chiari pelvic osteotomy. All cases had leg length discrepancies over 20mm, and were diagnosed as preosteoarthritis or initial stage of coxoarthrosis. The patients consisted of one male and eight females, an average age being 15-year-old. Ninomiya described that limping and Trendelenburg sign would not disappear by distal transfer of the greater trochanter alone in the cases having leg length discrepancies over 20 or 30mm.Operations were performed since 1980.Preoperative mean discrepancy was 26mm.Eight patients showed Trendelenburg sign preoperatively and postoperative mean lengthening of the femur was 17.1mm. Trendelenburg sign almost disappeared in seven cases.Preoperative mean score of osteoarthritis of the hip joint based on the J. O. A. criteria was 80.3 points which were improved to 89.2 point postoperatively.
西日本整形・災害外科学会の論文