Ilizarov joint distraction What is Ilizarov joint distraction?
This is a relatively new technique involving the application of an (operatively applied) external frame/'fixator' across the ankle joint. The specific type of frame is called an Ilizarov frame which supports the foot, ankle and tibia with fine tensioned wires (the suspension bridge principle).  
The frame is designed to allow full weight bearing after the procedure.
As the ankle joint is immobilised by the wires it may be necessary to wear a rocker sole shoe whilst it is in place.
How is the frame used?
The frame is used to distract (open up) the arthritic ankle joint. It can achieve this as it is fixed on either side of the ankle. 
The distance between the two points of fixation (across the ankle joint, labelled 1 and 2) is increased using bars and nuts. This stretches the soft tissues and opens the joint. 
This traction is maintained usually for three months, then the frame is removed.  
The frame in place with wires crossing the tibia and calcaneum(heel bone). The initial operation is normally combined with an arthroscopic debridement of the ankle joint.
(The frame incidentally can also be used to correct deformities at /around the ankle concurrently by using the same principles of distraction to lengthen chronically shortened/contracted soft tissues). | 
