Abstract
Our hospital reported 11 cases treated with Chiari pelvic osteotomy during 1987-1991. The following are the results: There were 2 male patients and 9 female patient. The average age of the patients at operation was 30.7 years. The average period of follow up study after operation was 3 years and 2 months.
The clinical results were assessed by the JOA score, X-ray and the muscle power of the hip joint measured by Cybex 350.
The average JOA score improved to 90.9 from 71.0; Sharp angle to 44.0°from 51.6°; CE angle to 24.0°from -7.5°; acetabular head index to 78.5% from 46.6% and lever arm ratio to 2.71 from 2.96. The muscle power of the operative hip joint was almost equal to the opposite side.
The result was found to correlate with the JOA score and lever arm ratio, but not with the muscle power of the hip joint.
