Artificial knee joint, comprising pre-tensioned pushing rod extending immediately when leg is lifted

摘要

The artificial knee joint (1) is attached to the stump (8) with a horizontally rotating plate (12) and with a transversal bolt (5) to an artificial lower leg (2). A hydraulically operated (3) pushing rod (41) is located at the rear of the mechanism. When the leg is lifted, a helical spring (42), encompassing the pushing rod (41) is released and causes the rod (41) to straighten the leg immediately. When the foot is supported against the ground, the rod (41) is pushed back into a recess.