Fig 1.

Portal placement in a left ankle, as seen from a top-down surgeon’s perspective with the ankle in supine position. Anatomic landmarks and structures at risk are depicted schematically. The surgeon’s thumb palpates the anteromedial soft spot. The a denotes the anteromedial portal location, and b denotes the anterolateral portal location. From medial to lateral, 1 contains the saphenous nerve and greater saphenous vein, 2 the anterior tibial tendon and anterior neurovascular bundle, 3 the extensor digitorum longus tendon, and 4 the superficial peroneal nerve with its medial dorsal cutaneous branch (superior) and intermediate dorsal cutaneous branch (inferior). (F, fibula; T, talus, Tib, tibia.)