US Patent 7172567 Orthopedic aid with a locking device

In an orthopedic aid with two parts (15, 16) which are movable relative to one another and with a locking device for locking the two parts (15, 16) in a predetermined relative position and for unlocking the parts (15, 16) in order to permit movement of the parts (15, 16) with respect to one another, the unlocking can be advantageously controlled by the fact that the locking device can be actuated electromechanically from a control module (8, 8′), and an actuating signal can be sent by wireless transmission from an actuating unit (9′, 14) to the control module (8, 8′).