Evans Repair of Lateral Instability of the Ankle

The Evans operation for lateral instability of the ankle is a simple procedure technically. The peroneus brevis tendon is passed through a drill hole in the distal fibula and fastened under tension, producing a strong autogenous lateral ligament of the ankle. In a series of five patients followed an average of 21A years postoperatively, the Evans operation has resulted in a stable ankle in each instance, with the patients able to carry out athletic activities as desired. A loss of inversion of the ankle ranging from 10° to 30° was noted in each patient.