TITLE

Navigated non-image-based positioning of the acetabulum during total hip replacement

AUTHOR(S)
Jenny, Jean-Yves; Boeri, Cyril; Dosch, Jean-Claude; Uscatu, Marius; Ciobanu, Eugen
PUB. DATE
February 2009
SOURCE
International Orthopaedics;Feb2009, Vol. 33 Issue 1, p83
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We tested the hypothesis that the non-image-based navigation system used in our department was able to measure accurately the 3D positioning of the acetabular cup of a total hip replacement (THR) and to increase the accuracy of its implantation during THR. We studied 50 consecutive navigated implantations of a THR and compared the intra-operative measurement of the cup by the navigation system to the post-operative measurement by computed tomography (CT) scan. The mean difference between the navigated and CT scan measurements for cup inclination was 2°. The mean difference between the navigated and CT-scan measurements for cup flexion was 4°. These differences were significant but considered to be clinically irrelevant in most cases. A total of 73% of the cases were within the safe zone defined prior to the study. The non-image-based system used allows a precise orientation of the cup during THR.
ACCESSION #
84659265

 

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