Modified rotational acetabular osteotomy (RAO) for advanced osteoarthritis of the hip joint in the middle-aged person First report

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Abstract
Summary Classical methods for pelvic osteotomy, such as those of Salter, Pemberton, Chiari, and Wagner, have been developed for reconstruction of the subluxed hip joint in children and young adults [5, 7, 12, 18, 25, 26, 30, 31, 37, 39]. Regarding pelvic osteotomy involving a middle-aged patient, however, there are not as many operation methods to consider, and it is difficult to choose the most suitable technique for alleviating advanced osteoarthritis [9, 18, 20, 26, 29, 32, 33, 35, 38]. Based on current practice, total hip replacement (THR) seems the accepted method, though it presents problems such as loosening, sinking, and infections; because of these factors physicians hesitate to recommend THR surgery, particularly if the patient is otherwise healthy and appears to have many good years ahead of him [1, 2, 4, 8, 10, 11, 15, 19, 21, 24, 28, 36]. As an alternative, we have been developing and improving the acetabular osteotomy, based on Tagawa's rotational acetabular osteotomy (RAO) [20, 35] and Wagner's acetabular osteotomy (type II) [38]. In this paper we present the results of a modified RAO operation performed on 50 middle-aged patients with an average age of 42 years and 2 months (31–61). The average follow-up was 3 years and 3 months (1–9 years). In 82% of patients the result was satisfactory (41 of 50 cases). A similar osteotomy technique has been used by Eppright [9] and Wagner [38]. We feel that our method achieves a more favorable result for an older patient with severe osteoarthritis, since both the surgery and the follow-up rehabilitation are more comprehensive. A modified acetabular osteotomy should not be regarded as merely an alternative to total hip replacement, but as the preferred choice for hip-joint reconstruction.

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