Coupling biplanar videoradiography with the unified deformable power model to quantify foot and talocrural joint power.

Analysis of the power produced by the foot and ankle during locomotion can provide insights into their function. Foot power is often quantified by applying the unified deformable (UD) power model to the hindfoot while ankle power is quantified by performing three or six degree-of-freedom joint power calculations. These measurements are possible with optical motion capture.