Article

Accurate localization of joint centers is essential in movement analysis.
However, joint centers cannot be directly palpated and alternative methods must
be used. To assess the relative merits of these methods, a medical image based
reference should be used. The EOS((R)) system, a new low dose bi-planar X-rays
imaging technique may be considered. The aim of this study was to evaluate the
accuracy of hip joint center (HJC) localization using the EOS((R)) system.
Seventeen healthy young adults participated in the study. Femoral heads and
pelvic external markers were localized using the EOS((R)) system and the HJCs
were expressed in the movement analysis coordinate system. Results showed that
external marker localization was reliable within 0.15 mm for trained assessors.
Mean accuracy for HJC localization was 2.9 mm (SD: 1.3, max: 6.2). The EOS based
method therefore appeared reliable and may be used for femoral head localization
or as a reference to assess the accuracy of other methods for HJC localization.
CI - Copyright (c) 2013 Elsevier B.V. All rights reserved.

Langue : ANGLAIS