Defining the lateral edge of the femoroacetabular articulation: correlation analysis between radiographs and computed tomography

Ashish Mittal, James D. Bomar, Megan E. Jeffords, Ming Tung Huang, Dennis R. Wenger, Vidyadhar V. Upasani

研究成果: Article同行評審

7 引文 斯高帕斯(Scopus)

摘要

Purpose: The purpose of this study was to analyze the variation in measuring the lateral center edge angle of Wiberg (LCEA) using the lateral edge of the sourcil (LCEA-S) compared to the lateral edge of the acetabulum (LCEA-E), and to correlate these measurements with three-dimensional computed tomography (3D-CT)-based analysis of the femoroacetabular articulation. Methods: A retrospective analysis was performed on 24 patients (45 hips) treated for hip dysplasia at a single institution. All patients were required to have an anteroposterior (AP) pelvis radiograph and pelvic CT. LCEA-S and LCEA-E measurements were calculated from radiographs. Axial CT images were processed to standardize pelvic orientation and calculate the LCEA at three points (posterior, central, anterior) along the acetabular edge. Correlation analysis was used to evaluate radiographic and CT measures. Results: Eight males and 16 females with an average age of 14.6 years were included. The LCEA-S (16.5° ± 2.0°) was found to be significantly less than the LCEA-E (26.0° ± 2.0°) (p < 0.001). The LCEA-S had the greatest correlation with the central measurement on the 3D-CT (rs = 0.893; p < 0.001). The LCEA-E had the greatest correlation with the anterior measurement on the 3D-CT (r = 0.834; p < 0.001). Conclusions: The LCEA can change significantly depending on the bony landmark used to define the lateral edge of the femoroacetabular articulation. The edge of the sourcil most closely correlates with the central weight-bearing portion of the articular surface on the 3D-CT and should be used to define the LCEA when treating patients with hip dysplasia. Level of evidence: Level III, retrospective comparison study.

原文English
頁(從 - 到)365-370
頁數6
期刊Journal of Children's Orthopaedics
10
發行號5
DOIs
出版狀態Published - 2016 十月 1

All Science Journal Classification (ASJC) codes

  • 兒科、圍產兒和兒童健康
  • 骨科和運動醫學

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