Fig. 1.

Transverse section at the level of the ankle joint. a. Anatomical relations of the anterolateral portal. b. Anatomical relations of the anteromedial portal 1 Lateral malleolus, 2 Medial malleolus, 3 Talus, 4 Tibialis anterior tendon, 5 Extensor hallucis longus tendon, 6 Extensor digitorum longus and peroneus tertius tendons, 7 Peroneus brevis tendon, 8 Peroneus longus tendon, 9 Achilles tendon, 10 Tibialis posterior tendon, 11 Flexor digitorum longus, 12 Flexor hallucis tendon (musculotendinous), 13 Deep peroneal nerve and anterior tibial artery and veins, 14 Medial dorsal cutaneous nerve (medial terminal branch of superficial peroneal nerve), 15 Intermediate dorsal cutaneous nerve (lateral terminal branch of superficial peroneal nerve), 16 Posterior tibial nerve and posterior tibial artery and veins, 17 Sural nerve and small saphenous vein, 18 Saphenous nerve and great saphenous vein, 19 Posterior peroneal artery and 20 Anterior peroneal artery