Surgical correction of idiopathic medical femoral torsion.

We reviewed 28 hips in 14 patients with severe bilateral idiopathic medial femoral torsion which had been corrected by intertrochanteric rotation osteotomy using crossed pins for fixation and a hip spica. There were 10 girls and 4 boys with a mean age of 7 years and 9 months. All had functional and cosmetic disability before operation. The average follow up was for 3 years and 9 months. Full correction was achieved in 27 hips. In one partial avascular necrosis of the femoral head occurred one year after operation and was treated by an acetabular augmentation procedure with a satisfactory outcome.