Figure 5.
Ankle-foot orthosis (AFO) with a uniaxial strain gage force transducer added posterior to the ankle joint to measure the force proportional to isometric dorsiflexion torque. The foot and shoe would slide into the AFO with the toes pointing to the left of the figure and the shank of the leg fit snugly within the calf band at the top of the device. A freely rotating hinge joint allowed relative motion at the ankle with only the strain gage force transducer impeding dorsiflexion.