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Incidence and Characteristics of Femoral Deformities in the Dysplastic Hip

  • Symposium: Papers Presented at the Hip Society Meetings 2008
  • Published:
Clinical Orthopaedics and Related Research

Abstract

Reorientation acetabular osteotomies can correct dysplastic deformities and provide marked improvement in hip function. Deformities of the proximal femur can produce suboptimal articulation or secondary impingement after acetabular reorientation, yet the incidence and characteristics of such deformities have not been well described. To describe the proximal femoral anatomy in patients with symptomatic acetabular dysplasia, we retrospectively analyzed the radiographs of 108 hips treated with periacetabular osteotomy. The radiographic findings were compared with those in 22 control hips. In the dysplastic group, 80 hips were in women and 28 in men, and the average age was 24.8 years. Of the 108 abnormal radiographs, 44% had coxa valga and 4% coxa vara. Seventy-two percent had an aspheric or deformed femoral head and the head-neck offset was insufficient in 75% of the hips. When compared with the control hips, dysplastic hips had differences in parameters of proximal femoral anatomy that we measured. These data demonstrate a high incidence of proximal femoral abnormalities associated with acetabular dysplasia. Identifying and treating these abnormalities may optimize joint congruency and minimize secondary impingement after acetabular reorientation.

Level of Evidence: Level II, diagnostic study. See the Guidelines for Authors for a complete description of levels of evidence.

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Authors and Affiliations

  1. Department of Orthopaedic Surgery, Barnes-Jewish Hospital, Washington University School of Medicine, One Barnes-Hospital Plaza, Suite 11300, West Pavilion, Campus Box 8233, St Louis, MO, 63110, USA

    John C. Clohisy MD, Ryan M. Nunley MD & Jack C. Carlisle MD

  2. St Louis Shriners Hospital for Children and St Louis Children’s Hospital, St Louis, MO, USA

    Perry L. Schoenecker MD

Authors
  1. John C. Clohisy MD
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  2. Ryan M. Nunley MD
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  3. Jack C. Carlisle MD
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  4. Perry L. Schoenecker MD
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Corresponding author

Correspondence to John C. Clohisy MD.

Additional information

One or more of the authors has received funding from a grant from Zimmer, Inc (JCC). This work was supported in part by Award Number UL1RR024992 from the National Center For Research Resources (JCC). The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center for Research Resources or the National Institutes of Health. This work was also supported in part by the Curing Hip Disease Fund (JCC).

Each author certifies that his or her institution has approved the reporting of these cases, that all investigations were conducted in conformity with ethical principles of research, and that informed consent for participation in the study was obtained.

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Clohisy, J.C., Nunley, R.M., Carlisle, J.C. et al. Incidence and Characteristics of Femoral Deformities in the Dysplastic Hip. Clin Orthop Relat Res 467, 128–134 (2009). https://doi.org/10.1007/s11999-008-0481-3

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  • DOI: https://doi.org/10.1007/s11999-008-0481-3

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