A new technique for stabilization of the lateral ankle ligaments is presented. The procedure uses a split peroneus longus tendon to recreate the calcaneofibular and anterior talofibular ligaments. The new ligaments follow a precise anatomic course that replicates the pathway of the original ligaments. The procedure also capitalizes on interference screw technology so that accurate ligament tension can be obtained. This technique is most useful for severe ligamentous insufficiency involving both the calcaneofibular and anterior talofibular ligaments. Biomechanical rationale for the use of peroneus longus is also discussed.