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Clinical Orthopaedics and Related Research®

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Open Access 01-02-2011 | Basic Research

Multilevel Measurement of Acetabular Version Using 3-D CT-generated Models: Implications for Hip Preservation Surgery

Authors: Aimee C. Perreira, BS, John C. Hunter, MD, Thaddeus Laird, MD, Amir A. Jamali, MD

Published in: Clinical Orthopaedics and Related Research® | Issue 2/2011

Abstract

Background

Numerous structural deformities of the acetabulum are associated with hip osteoarthritis (OA). Acetabular retroversion has been implicated in the development of femoroacetabular impingement. However, it is unknown if retroversion occurs from isolated excessive bone in the superior acetabulum or a torsional phenomenon of the entire pelvic segment.

Questions/purposes

A method was developed to measure acetabular version (AV) using 3-D models thus eliminating positional factors. This method was used to determine if acetabular retroversion is an isolated entity or an effect involving the entire pelvic segment containing the acetabulum.

Method

Fifty pelvic CT scans were selected from a large database. Measurements were performed for abduction, ischial spine position, and AV at multiple levels. The relationships between anteversion at multiple levels and between midacetabular anteversion and ischial spine position were analyzed.

Results

The mean upper and midlevel acetabular anteversion values were 14.4° ± 10.5° and 21.3° ± 5.8°, respectively. The mean abduction was 39.7° ± 4.3°. The prevalence of acetabular retroversion was 7%. Females had greater anteversion than males at all levels. Correlations were found between Levels 1 and 4 version (r = 0.74) and the ischial spine index and Level 4 version (r = 0.67).

Conclusions

These data suggest retroversion involves the acetabulum at all levels and includes the entire pelvic segment containing the acetabulum and the ischial spine.

Clinical Relevance

These data are relevant for surgeons in providing targets for normal positioning of the acetabulum during periacetabular osteotomies and acetabular recontouring procedures.

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Title: Multilevel Measurement of Acetabular Version Using 3-D CT-generated Models: Implications for Hip Preservation Surgery
Authors: Aimee C. Perreira, BS
John C. Hunter, MD
Thaddeus Laird, MD
Amir A. Jamali, MD
Publication date: 01-02-2011
Publisher: Springer-Verlag
Published in: Clinical Orthopaedics and Related Research® / Issue 2/2011
Print ISSN: 0009-921X
Electronic ISSN: 1528-1132
DOI: https://doi.org/10.1007/s11999-010-1567-2

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Multilevel Measurement of Acetabular Version Using 3-D CT-generated Models: Implications for Hip Preservation Surgery

Abstract

Background

Questions/purposes

Method

Results

Conclusions

Clinical Relevance

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Questions/purposes

Method

Results

Conclusions

Clinical Relevance

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