Development and Evaluation of a Powered Artificial Gastrocnemius for Transtibial Amputee Gait

Figure 8

Components of affected-side knee moment of amputee participants with the powered AG, averaged across participants. The net value, which is the sum of biological knee and AG values, is shown for two walking conditions: the ZERO condition (thick solid blue line) and the OPT condition (thin solid red line). The contribution from the biological knee joint is also shown for the OPT condition (dashed thin green line). Nonamputee data, averaged across participants, are shown for reference, with the mean (dashed black line) ± one standard deviation (dotted black lines).