Fig. 1. Dorsiflexor assist (DFA) device used to reduce dorsiflexor muscle demand.
The device secures around the subject's knee (A) with a Velcro-compatible
surface. The subject dorsiflexed the foot allowing strap (B) to be pulled
through the cam-style buckle. This allowed the rubber tubing (C) to be
stretched applying a force and thus a torque around the ankle.