 It is no longer a common operation, but is still used in cases of a deformed calcaneus, foot paralysis following poliomyelitis, and rigid clubfoot deformities that are secondary to spina bifida or arthrogryposis (AMC).The surgery is also performed in severe cases of pulverized or infected open fractures.Generally, the surgical procedure involves making an anterolateral incision, stripping the ligaments from both malleoli and the calcaneus so that the foot can be displaced posteriorly.