Unilateral Ankle Joint 17LA1

A new kind of ankle joint for unilateral treatment has been constructed in an unusual, though highly functional design. A construction unusually narrow for an ankle joint makes this joint unique.

By offsetting the lower leg bar and the foot stirrup towards each other, it has been possible to design the joint with dimensions hardly larger than a normal ankle joint. This offers significant advantages for the height, the effectiveness of the foot lifter and the cosmetics. In terms of functionality, it offers the orthopedic technician many possibilities. Replaceable joint inserts allow different stop angles to be used for limiting movement. These range from an angle size of 0°– 15°.

Another feature is the connection between the ankle and knee joint. The lower leg rod with joint attachment device for the ankle joint can be directly connected to the knee joint at the proximal end. This significantly limits the height of the construction and improves the functioning and the cosmetics of the orthosis. The foot lever function, which can be used if necessary, ensures effective and soundless dorsiflexion.

Using an O-ring made of polyurethane ensures it low maintenance and easy to retrofit. If necessary, it is possible to use a second ring for increasing foot lever strength. The special bearings in the joint do not require any lubrication. For maintaining the ankle joint, all the moveable parts are easily accessible and can be replaced at any time if required.

Normal shoes can generally be worn thanks to the unilateral guidance and the flat form of the joint. The ankle joints 17LA1 are classified as knee joints.