abstract:The deep fibular nerve (deep peroneal nerve) begins at the bifurcation of the common fibular nerve, between the fibula and upper part of the fibularis (peroneus) longus, passes infero-medially, deep to extensor digitorum longus, to the anterior surface of the interosseous membrane, and comes into relation with the anterior tibial artery above the middle of the leg; it then descends with the artery to the front of the ankle-joint, where it divides into a lateral and a medial terminal branch.