Current Update in Total Ankle Arthroplasty: Salvage of the Failed Total Ankle Arthroplasty with Anterior Translation of the Talus.

Abstract

Ankle replacement results may be compromised by malposition of the components. An anterior displacement can be measured on a lateral standing radiograph. The ankle may appear anteriorly translated because the ankle is overstuffed, the heel cord is tight, or the posterior capsule is tight. In ankle instability with degenerative arthritis, the talus may be anteriorly translated, internally rotated, and in varus. In an ankle replacement, this deformity may persist and will require correction. On occasion, the talus is inserted too anterior; revision to a flat cut talar component and posterior translation of the talar component will result in correction.