We studied the clinical and radiological results of Rotational Acetabular Osteotomy (RAO) in 15 female patients over 40 years of age. 13 cases were treated with a single RAO, one case also received a varus osteotomy and in addition one other case received a valgus osteotomy. The mean age at the time of surgery was 45.8 years (range, 41 to 56 years). The mean duration of follow-up was 1.4 years (range, 0.5 to 3.3 years). Most cases achieved excellent results, and it was suggested that RAO is indicated for patients over 40 years of age, and those who have achieved congruity in abduction and have a round head.
