Factors affecting femoral varus osteotomy in cerebral palsy: a long-term result over 10 years.

The present study was conducted to review the long-term results of femoral varus osteotomy with/without pelvic osteotomy of spastic cerebral palsy. We also evaluated the spastic hip score with following factors: migration index of Reimer's, Shenton's line, shape of the femoral head, shape of the roof of the acetabulum, and presence of windblown effect. Of the 31 children (61 hips) reviewed, 49 hips (80%) had satisfactory outcomes after 10 years of follow-up. Twelve hips showed unsatisfactory outcomes with recurrent dislocation or significant osteoarthritis. A low preoperative spastic hip score was more indicative of a better outcome.