Figure 1.
Plug-in-Gait marker set.
Figure 2.
Mean and standard deviation of knee joint rotations during gait for a single typical subject before (grey dash-dotted line and light-grey area) and after correction (black solid line and grey area).
Dotted vertical line indicates the mean toe off value for this subject.
Table 1.
Mean and S.D. of variability of the flexion/extension axis, the abduction/adduction axis and cross-talk (r2) between those axes, before (initial) and after (PCA-corrected) correction with PCA method.
Figure 3.
Averaged ab/adduction angle (mean and SD) during gait for each of the four OA patients before (grey dash-dotted line and light-grey area) and after correction (black solid line and grey area).
Dotted vertical line indicates mean toe off.
Table 2.
Comparison between the x-ray grading and the varus/valgus angle during the posture trial before (b.c.) and after (a.c.) correction.