Is the acetabular cup orientation after total hip arthroplasty on a two dimension or three dimension model accurate?

Craiovan, Benjamin; Renkawitz, Tobias; Weber, Markus; Grifka, Joachim; Nolte, Lutz-Peter; Zheng, Guoyan (2014). Is the acetabular cup orientation after total hip arthroplasty on a two dimension or three dimension model accurate? International orthopaedics, 38(10), pp. 2009-2015. Springer 10.1007/s00264-014-2336-8

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Purpose Malposition of the acetabular component in total hip arthroplasty (THA) is a common surgical problem that can lead to hip dislocation, reduced range of motion and may result in early loosening. The aim of this study is to validate the accuracy and reproducibility of a single x-ray image based 2D/3D reconstruction technique in determining cup inclination and anteversion against two different computer tomography (CT)-based measurement techniques. Methods Cup anteversion and inclination of 20 patients after cementless primary THA was measured on standard anteroposterior (AP) radiographs with the help of the single x-ray 2D/3D reconstruction program and compared with two different 3D CT-based analyses [Ground Truth (GT) and MeVis (MV) reconstruction model]. Results The measurements from the single x-ray 2D/3D reconstruction technique were strongly correlated with both types of CT image-processing protocols for both cup inclination [R²=0.69 (GT); R²=0.59 (MV)] and anteversion [R²=0.89 (GT); R²=0.80 (MV)]. Conclusions The single x-ray image based 2D/3D reconstruction technique is a feasible method to assess cup position on postoperative x-rays. CTscans remain the golden standard for a more complex biomechanical evaluation when a lower tolerance limit (+/-2 degrees) is required.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute for Surgical Technology & Biomechanics ISTB
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research

UniBE Contributor:

Nolte, Lutz-Peter and Zheng, Guoyan

Subjects:

500 Science > 570 Life sciences; biology
600 Technology > 610 Medicine & health
600 Technology > 620 Engineering

ISSN:

0341-2695

Publisher:

Springer

Language:

English

Submitter:

Guoyan Zheng

Date Deposited:

01 May 2015 16:23

Last Modified:

25 Nov 2015 10:48

Publisher DOI:

10.1007/s00264-014-2336-8

BORIS DOI:

10.7892/boris.67985

URI:

https://boris.unibe.ch/id/eprint/67985

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