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[Acetabular retroversion in hip dysplasia].

Ye Huang1, Hong Zhang, Yi-xiong Zhou

  • 1Department of Orthopedics, Beijing Jishuitan Hospital, Beijing 100035, China. huangyesteve@yahoo.com.cn

Zhonghua Wai Ke Za Zhi [Chinese Journal of Surgery]
|June 9, 2005
PubMed
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Acetabular retroversion occurs in about one-sixth of hip dysplasia patients and can be identified on standard X-rays. Traditional periacetabular osteotomy maneuvers may worsen this retroversion.

Area of Science:

  • Orthopedic Surgery
  • Radiology
  • Hip Dysplasia Research

Background:

  • Acetabular retroversion is a condition where the hip socket faces too far backward.
  • It is a contributing factor in hip dysplasia, a developmental disorder of the hip joint.
  • Accurate diagnosis and understanding its behavior during surgery are crucial for effective treatment.

Purpose of the Study:

  • To determine the frequency of acetabular retroversion in patients with hip dysplasia.
  • To characterize the radiographic features indicative of acetabular retroversion.
  • To evaluate the impact of traditional periacetabular osteotomy maneuvers on acetabular retroversion.

Main Methods:

  • A retrospective analysis of 45 consecutive dysplastic hips (43 patients) undergoing Bernese periacetabular osteotomy.

Related Experiment Videos

  • Diagnosis of acetabular retroversion was based on specific radiographic signs ('cross-over' and 'posterior wall' signs) on standard pelvic radiographs.
  • Patient demographics and surgical details were recorded.

    • Main Results:

    • Acetabular retroversion was identified in 17.8% of the studied hips.
    • The 'cross-over' sign was positive in 8 hips, and the 'posterior wall' sign in 5 hips.
    • Post-osteotomy, radiographic signs of retroversion shifted, and the 'posterior wall' sign became apparent in all cases initially showing the 'cross-over' sign.

    Conclusions:

    • Acetabular retroversion affects approximately one-sixth of hip dysplasia patients, with the superior acetabulum facing posterolaterally.
    • Standard AP pelvic radiographs are effective for identifying acetabular retroversion.
    • Traditional maneuvers during periacetabular osteotomy can potentially exacerbate acetabular retroversion in affected patients.