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In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
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Published on: July 2, 2021

Acetabular changes in coxa vara.

Ashish Ranade1, James J McCarthy, Richard S Davidson

  • 1Shriners Hospitals for Children, Philadelphia, Philadelphia, PA, USA.

Clinical Orthopaedics and Related Research
|May 10, 2008
PubMed
Summary
This summary is machine-generated.

Coxa vara, a hip condition, is associated with increased acetabular slope. This acetabular upsloping correlates with the severity of the proximal femur varus, indicating significant developmental changes.

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Area of Science:

  • Orthopedic surgery
  • Pediatric orthopedics
  • Radiology

Background:

  • Coxa vara is a hip deformity characterized by an increased angle of the femoral neck in the coronal plane.
  • Acetabular morphology plays a crucial role in hip joint stability and development.
  • Understanding acetabular changes in coxa vara is essential for diagnosis and management.

Purpose of the Study:

  • To define acetabular alterations in pediatric coxa vara.
  • To compare acetabular morphology in coxa vara hips versus normal hips.
  • To investigate the relationship between the degree of varus and acetabular changes.

Main Methods:

  • Retrospective review of 33 pediatric patients with coxa vara (developmental or congenital femoral deficiency).
  • Radiographic analysis including acetabular index, sourcil slope, center edge angle, migration index, and medial joint space.
  • Comparison of measurements with a control group of 29 normal hips.

Main Results:

  • Hips with coxa vara demonstrated a significantly increased acetabular slope (acetabular index and sourcil slope) compared to controls.
  • A statistically significant inverse correlation was found between the degree of varus and acetabular upsloping.
  • Joint subluxation parameters showed minimal differences between coxa vara and control groups.

Conclusions:

  • Coxa vara is characterized by an increased acetabular slope, which is more pronounced with greater femoral varus.
  • Acetabular inclination is a key radiographic finding in pediatric coxa vara.
  • The study highlights specific acetabular remodeling patterns associated with coxa vara.