Fig 3.

Construction of the fibular bone tunnel to serve as the docking site for the fibular stem of the anatomic Y-graft. The arthroscope is inserted through the medial midline portal, which is used as the viewing portal, whereas the accessory anterolateral portal is used as the working portal. A guidewire is inserted through the accessory anterolateral portal to penetrate the fibula 8 mm distal to the fibular attachment of the anterior talofibular ligament and directed toward the proximal and posterior edge of the fibula at an angle of approximately 20° with respect to the long axis of the fibula. Care is taken to pass the guidewire through the central portion of the fibula in the coronal axis to prevent fracture with over-drilling.