Abstract: A quick-release mechanism for disconnecting the footwear and footplate of an orthoses from a rotation bar, 90-degree bar, or other component of an orthosis is disclosed. The mechanism allows the footwear to be fitted to a patient with the bar or other component disengaged, while also allowing the angle between the bar or other component and the footplate to be locked when the orthosis is in place in order to treat conditions such as clubfoot.

Abstract: An orthosis knee joint using a lock bearing arrangement is disclosed. The joint uses lock bearings that move in individual, arcuate races. The lock bearings are manipulated by means of a bearing cage from a locked position to an unlocked position. The locking mechanism is provided by the ramped shape of the bottom of the individual bearing races; movement of the bearing cage pinches the bearings at the shallower end of the ramp when the lock is activated and rotational force is exerted in the flexion direction. Movement in the extension direction, however, is still allowed in the locked position.