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Werner, C M L; Copeland, C E; Ruckstuhl, T; Stromberg, J; Turen, C H; Bouaicha, S (2011). Relationship between Wiberg's lateral center edge angle, Lequesne's acetabular index, and medial acetabular bone stock. Skeletal Radiology, 40(11):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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2 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Trauma Surgery
04 Faculty of Medicine > Balgrist University Hospital, Swiss Spinal Cord Injury Center
DDC:610 Medicine & health
Language:English
Date:2011
Deposited On:16 Jan 2012 20:30
Last Modified:27 Nov 2013 21:55
Publisher:Springer
ISSN:0364-2348
Publisher DOI:10.1007/s00256-011-1141-3
PubMed ID:21404052

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