Unilateral Ankle Joint 17LA1

A new kind of ankle joint for unilateral fitting has been constructed in an unusual—though highly functional— design.
The special feature of this joint is its slim design, which – for a unilateral ankle joint – is rather unusual.

By offsetting the lower leg bar and the foot stirrup towards each other we’ve been able to create the joint with dimensions barely larger than a normal ankle joint.
This offers decisive advantages in terms of structural height, effectiveness of the dorsiflexion-assist and appearance.
In terms of functionality, it offers the orthopedic technician many possibilities, including replaceable stop inserts, which allow different stop angles to be used for limiting movement. These range from an angle size of 0° to 15°.

Another feature is the connection between ankle joint and knee joint.
The lower leg bar with an attachment device for the ankle joint can be directly connected to the knee joint at the proximal end. This considerably reduces the structural height and improves both the function and the appearance of the orthosis.

The dorsiflexion function, which need be used only when necessary, ensures effective and soundless dorsiflexion. Using an O-ring made of polyurethane also makes it low maintenance and easy to retrofit. If necessary, it is possible to use a second ring for increasing the strength of the dorsiflexion-assist. Thanks to the special bearing technology in the joint, lubrication is unnecessary.

For maintaining the ankle joint, all the moveable parts are easily accessed and can be replaced at any time if required.
Normal shoes can usually be worn thanks to the unilateral guidance and the flat joint profile. The 17LA1 Ankle Joints are classified as knee joints.