[Curved intertrochanteric varus osteotomy].

Curved intertrochanteric varus osteotomy is osteotomized between the lesser trochanter and the greater trochanter which is curved so as to place the femoral head in a varus position by rotating it in the coronal plane. After mean follow-up of 5.4 years of 57 joints, approximately 98% of joints were preserved and 90% of joints were protected from the progression of disease. Curved intertrochanteric varus osteotomy can be used to preserve the hip joint in patients with osteonecrosis of the femoral head.