Osteonecrosis of the femoral head. Simple varus intertrochanteric osteotomy.
We present the long-term results of simple varus intertrochanteric osteotomy for osteonecrosis of the femoral head. We followed 26 hips in 20 patients, with a mean age at the time of surgery of 36 years, for a mean of 12.5 years. The mean varus angulation was 23 degrees. The outcome in 19 of the hips (73%) was good or excellent; seven (27%) had a fair or poor result, with four needing some form of prosthetic arthroplasty. Simple varus intertrochanteric osteotomy is indicated, even if the extent of the capital infarct comprises more than 50% of the diameter of maximum radial distance from the circumference, provided that after operation the medial necrotic lesion measures less than two-thirds of the weight-bearing area, and the superolateral bone is normal.
Ito
H
H
Department of Orthopaedic Surgery, Hokkaido University School of Medicine, Japan.
Kaneda
K
K
Matsuno
T
T
D000328:Adult; D005260:Female; D005269:Femur / Q000601:surgery; D005271:Femur Head Necrosis / Q000000981:diagnostic imaging / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods; D011183:Postoperative Complications; D011859:Radiography; D016896:Treatment Outcome