Relationship between Wiberg's lateral center edge angle, Lequesne's acetabular index, and medial acetabular bone stock

Clément M.L. Werner, Carol E. Copeland, Thomas Ruckstuhl, Jeff Stromberg, Clifford H. Turen, Samy Bouaicha

Research output: Contribution to journalArticle

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Abstract

Objective: Knowledge of acetabular anatomy is crucial for cup positioning in total hip replacement. Medial wall thickness of the acetabulum is known to correlate with the degree of developmental dysplasia of the hip (DDH). No data exist about the relationship of routinely used radiographic parameters such as Wiberg's lateral center edge angle (LCE-angle) or Lequesne's acetabular index (AI) with thickness of the medial acetabular wall in the general population. The aim of our study was to clarify the relationship between LCE, AI, and thickness of the medial acetabular wall. Materials and methods: Measurements on plain radiographs (LCE and AI) and axial CT scans (quadrilateral plate acetabular distance QPAD) of 1,201 individuals (2,402 hips) were obtained using a PACS imaging program and statistical analyses were performed. Results: The mean thickness of the medial acetabulum bone stock (QPAD) was 1.08 mm (95% CI: 1.05-1.10) with a range of 0.1 to 8.8 mm. For pathological values of either the LCE (<20°) or the AI (>12°) the medial acetabular wall showed to be thicker than in radiological normal hips. The overall correlation between coxometric indices and medial acetabular was weak for LCE (r =-0.21. 95% CI [-0.25, -0.17]) and moderate for AI (r = 0.37, [0.33, 0.41]). Conclusions: We did not find a linear relationship between Wiberg's lateral center edge angle, Lequesne's acetabular index and medial acetabular bone stock in radiological normal hips but medial acetabular wall thickness increases with dysplastic indices.

Original languageEnglish (US)
Pages (from-to)1435-1439
Number of pages5
JournalSkeletal Radiology
Volume40
Issue number11
DOIs
StatePublished - Nov 1 2011

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Hip
Acetabulum
Bone and Bones
Hip Dislocation
Hip Replacement Arthroplasties
Anatomy
Population

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

Cite this

Werner, Clément M.L. ; Copeland, Carol E. ; Ruckstuhl, Thomas ; Stromberg, Jeff ; Turen, Clifford H. ; Bouaicha, Samy. / Relationship between Wiberg's lateral center edge angle, Lequesne's acetabular index, and medial acetabular bone stock. In: Skeletal Radiology. 2011 ; Vol. 40, No. 11. pp. 1435-1439.
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abstract = "Objective: Knowledge of acetabular anatomy is crucial for cup positioning in total hip replacement. Medial wall thickness of the acetabulum is known to correlate with the degree of developmental dysplasia of the hip (DDH). No data exist about the relationship of routinely used radiographic parameters such as Wiberg's lateral center edge angle (LCE-angle) or Lequesne's acetabular index (AI) with thickness of the medial acetabular wall in the general population. The aim of our study was to clarify the relationship between LCE, AI, and thickness of the medial acetabular wall. Materials and methods: Measurements on plain radiographs (LCE and AI) and axial CT scans (quadrilateral plate acetabular distance QPAD) of 1,201 individuals (2,402 hips) were obtained using a PACS imaging program and statistical analyses were performed. Results: The mean thickness of the medial acetabulum bone stock (QPAD) was 1.08 mm (95{\%} CI: 1.05-1.10) with a range of 0.1 to 8.8 mm. For pathological values of either the LCE (<20°) or the AI (>12°) the medial acetabular wall showed to be thicker than in radiological normal hips. The overall correlation between coxometric indices and medial acetabular was weak for LCE (r =-0.21. 95{\%} CI [-0.25, -0.17]) and moderate for AI (r = 0.37, [0.33, 0.41]). Conclusions: We did not find a linear relationship between Wiberg's lateral center edge angle, Lequesne's acetabular index and medial acetabular bone stock in radiological normal hips but medial acetabular wall thickness increases with dysplastic indices.",
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Relationship between Wiberg's lateral center edge angle, Lequesne's acetabular index, and medial acetabular bone stock. / Werner, Clément M.L.; Copeland, Carol E.; Ruckstuhl, Thomas; Stromberg, Jeff; Turen, Clifford H.; Bouaicha, Samy.

In: Skeletal Radiology, Vol. 40, No. 11, 01.11.2011, p. 1435-1439.

Research output: Contribution to journalArticle

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AU - Werner, Clément M.L.

AU - Copeland, Carol E.

AU - Ruckstuhl, Thomas

AU - Stromberg, Jeff

AU - Turen, Clifford H.

AU - Bouaicha, Samy

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N2 - Objective: Knowledge of acetabular anatomy is crucial for cup positioning in total hip replacement. Medial wall thickness of the acetabulum is known to correlate with the degree of developmental dysplasia of the hip (DDH). No data exist about the relationship of routinely used radiographic parameters such as Wiberg's lateral center edge angle (LCE-angle) or Lequesne's acetabular index (AI) with thickness of the medial acetabular wall in the general population. The aim of our study was to clarify the relationship between LCE, AI, and thickness of the medial acetabular wall. Materials and methods: Measurements on plain radiographs (LCE and AI) and axial CT scans (quadrilateral plate acetabular distance QPAD) of 1,201 individuals (2,402 hips) were obtained using a PACS imaging program and statistical analyses were performed. Results: The mean thickness of the medial acetabulum bone stock (QPAD) was 1.08 mm (95% CI: 1.05-1.10) with a range of 0.1 to 8.8 mm. For pathological values of either the LCE (<20°) or the AI (>12°) the medial acetabular wall showed to be thicker than in radiological normal hips. The overall correlation between coxometric indices and medial acetabular was weak for LCE (r =-0.21. 95% CI [-0.25, -0.17]) and moderate for AI (r = 0.37, [0.33, 0.41]). Conclusions: We did not find a linear relationship between Wiberg's lateral center edge angle, Lequesne's acetabular index and medial acetabular bone stock in radiological normal hips but medial acetabular wall thickness increases with dysplastic indices.

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