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  • Title: Rotational acetabular osteotomy for hip dysplasia: spontaneous medial enlargement of the acetabulum.
    Author: Yasunaga Y, Ikuta Y, Shigenobu T, Nakamura S, Yamamoto S, Nakashiro J.
    Journal: Acta Orthop Scand; 2001 Feb; 72(1):8-12. PubMed ID: 11327420.
    Abstract:
    We followed 56 patients (63 joints) who had undergone rotational acetabular osteotomy (RAOs) between 1987 and 1993, mean 7 (5-12) years. The Merle d'Aubigné score increased by 15 points or more in 59 and decreased in 4 hips. The arthrosis progressed in 5 joints. In about 2/3 of the cases, we observed some medial and/or lateral expansion of the subchondral bone in the acetabulum 3 years postoperatively, suggesting enlargement of the load-bearing area.
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