Fig. 12

Angle–angle plots. This graph shows the angle–angle plots of the joints in each group. The symmetry index is 18.0 ± 7.9 in the Normal-CT group (a), 17.7 ± 9.0 in the iSCI-NMES 75-Hz group (b), 15.4 ± 7.4 in the iSCI-NMES 8-kHz group (c), and 7.6 ± 2.0 in the Normal-CT group (d). Although a marginal improvement is observed in the iSCI-NMES 8-kHz group, no significant improvement is achieved