Fig. 13

Sonoanatomy of the deep peroneal (fibular) nerve. Short-axis views of the deep peroneal nerve from its origin from the fibular nerve to the anterior ankle. A Terminal division of the common peroneal nerve into deep and superficial peroneal (fibular) nerves at the fibular tunnel level. The anterior branch is the deep peroneal nerve and the posterior branch is the superficial peroneal nerve. B The deep peroneal nerve at the mid-leg level seen as a tiny monofascicular structure on top of the anterior tibial artery on the interosseus membrane deep to the tibialis anterior and extensor digitorum longus muscles. C The deep peroneal nerve just proximal to the ankle, running adjacent to the anterior tibial artery on its way to the anterior ankle. D The deep peroneal nerve at the anterior ankle seen adjacent to the anterior tibial artery (dorsalis pedis artery) and both are coursing over the tibia deep to the extensor tendons