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Published in: International Orthopaedics 8/2014

01-08-2014 | Original Paper

Does total hip arthroplasty restore native hip anatomy? Three-dimensional reconstruction analysis

Authors: Tsung-Yuan Tsai, Dimitris Dimitriou, Guoan Li, Young-Min Kwon

Published in: International Orthopaedics | Issue 8/2014

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Abstract

Purpose

Component orientations and positions in total hip arthroplasty (THA) are important parameters in restoring hip function. However, measurements using plain radiographs and 2D computed tomography (CT) slices are affected by patient position during imaging. This study used 3D CT to determine whether contemporary THA restores native hip geometry.

Methods

Fourteen patients with unilateral THA underwent CT scan for 3D hip reconstruction. Hip models of the nonoperated side were mirrored with the implanted side to quantify the differences in hip geometry between sides.

Results

The study demonstrated that combined hip anteversion (sum of acetabular and femoral anteversion) and vertical hip offset significantly increased by 25.3° ± 29.3° (range, −25.7° to 55.9°, p = 0.003) and 4.1 ± 4.7 mm (range, −7.1 to 9.8 mm, p = 0.009) in THAs.

Conclusions

These data suggest that hip anatomy is not fully restored following THA compared with the contralateral native hip.
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Metadata
Title
Does total hip arthroplasty restore native hip anatomy? Three-dimensional reconstruction analysis
Authors
Tsung-Yuan Tsai
Dimitris Dimitriou
Guoan Li
Young-Min Kwon
Publication date
01-08-2014
Publisher
Springer Berlin Heidelberg
Published in
International Orthopaedics / Issue 8/2014
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-014-2401-3

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