• Arch Orthop Trauma Surg · Jan 2000

    Case Reports

    Rotational acetabular osteotomy for severely dysplastic acetabulum.

    • M Nozawa, K Shitoto, T Hirose, K Matsuda, K Michino, H Kajihara, K Maezawa, and H Kurosawa.
    • Department of Orthopaedic Surgery, Juntendo University School of Medicine, Tokyo, Japan. nozawa@med.juntendo.ac.jp
    • Arch Orthop Trauma Surg. 2000 Jan 1; 120 (7-8): 376-9.

    AbstractThe operative procedures chosen for arthrosis with severe acetabular dysplasia vary among orthopaedic surgeons. We operated on 250 hips using the rotational acetabular osteotomy (RAO) method of Ninomiya and Tagawa [8]. In this report, we describe the technique of RAO and the results of this procedure in patients with severely dysplastic hips. Among the 250 hips, there were 6 which were classified as Severin group V. In those hips, the CE angle was less than 0 degrees, and the femoral head showed superolateral subluxation. After acetabular osteotomy with straight and curved osteotomes, smooth inferolateral rotation could be done in all cases. At the latest follow-up symptoms were improved remarkably, especially pain. Radiographically, adequate coverage of the femoral head was achieved and joint congruence improved in all 6 hips.

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