A system and method associated with the movement of a limb. In one example, the system, such as a prosthetic or orthotic system, includes an actuator that actively controls, or adjusts, the angle between a foot unit and a lower limb member. A processing module may control movement of the actuator based...http://www.google.com/patents/US7811334?utm_source=gb-gplus-sharePatent US7811334 - System and method for motion-controlled foot unit
