Knee joint proprioception in below-knee amputees.

This study determined knee joint proprioception in below-knee amputees using two methods of measurement of knee joint proprioception. The threshold for detection of passive motion and the ability to reproduce specific limb positions were recorded in nine below-knee amputees. A significant difference was observed between the prosthetic and sound limbs in the amputees in the threshold of detection test. The large angles (5 degrees to 25 degrees) involved in position reproduction tests may have provided cues through the cuff suspension. Different strategies are used by below-knee amputees to discern large and small movements of the knee.