Article

This study investigated the variability arising from replacement of different
calibration objects. A new calibration object (L-Frame) was instigated which
consisted of four markers screwed into fixed positions in the floor, to ensure
consistency between replacements. The variability of a healthy subject's joint
moments from replacement of different calibration objects (5 marker wand and
L-Frame) was compared to the subject's stride-to-stride repeatability (SSR).
Overall the L-Frame calibration object demonstrated the least amount of variation
during object replacement for both sagittal and coronal joint moments. In
particular for the coronal ankle moment the 5 marker wand positioned at the end
of the force-plate alignment had a variability of 81% of SSR, while the L-Frame
showed only 3% of SSR. Utilising the L-Frame to set the volume origin and global
coordinate system achieved the most consistent results, which is important for
assuring reliable measurements during 3-Dimensional Gait Analysis (3DGA).
CI - Crown Copyright (c) 2013. Published by Elsevier B.V. All rights reserved.

Langue : ANGLAIS