Lower-limb muscle activity in runners with a transtibial amputation

Timing of peak muscle activity of the biceps femoris long head during stance phase of running was compared for people with a transtibial amputation using running-specific and daily-use prostheses. The amputated leg had earlier peak activity compared to the intact leg using both prostheses, suggesting a compensation for the lost function of the ankle plantarflexors. Earlier amputated leg biceps femoris peak activity when using the daily-use prosthesis compared to the running-specific prosthesis likely stems from prosthesis design differences.