This is a cadaveric study on the safety and efficacy of talonavicular arthroscopy in arthroscopic triple arthrodesis. Talonavicular arthroscopy was performed in 18 feet of 9 fresh frozen cadavers. The specimens were divided into 3 groups (6 feet in each group). The articular cartilage of the talar and navicular facet was abraded with a hemostat through the dorsolateral portal in group 1 specimens. The cartilage was abraded through the dorsomedial portal in group 2 specimens and through the medial portal in group 3 specimens. The area of cartilage abrasion represented the working area of the corresponding portal. The working area of individual portal and the relationship of individual portal to the adjacent neurovascular structure were studied. The medial portal averaged 12 mm medial to the long saphenous vein and saphenous nerve. The dorsomedial portal was 1 mm lateral to the intermediate cutaneous branch of superficial peroneal nerve and 5 mm lateral to the extensor hallucis longus tendon. It was 4 mm lateral to the deep peroneal nerve. The dorsolateral portal was 4 mm medial to the lateral branch of superficial peroneal nerve. In group 1, the working area of the dorsolateral portal averaged 60 +/- 4

作者：Tun Hing, Lui；L K, Chan

来源：Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA 2010 年 18卷 5期