Figure 3.
Z-force weight-support contribution of robot: mean Z-force. A. Z-direction force of the control group. B. Z-direction force of the conventional stimulation group. C. Z-direction force of the robot-driven stimulation group. Significant trend downward in robot contribution is seen only in C. Mean levels in A and B differ significantly. The final mean level of Z is lowest in C, using robot driven epidural spinal stimulation.