[TA] one of the terminal branches of the common peroneal nerve, arising at the fibular neck and passing into the anterior compartment of the leg; it supplies the tibialis anterior, extensor hallucis longus, extensor digitorum longus, and peroneus tertius muscles in the leg, then crosses the ankle joint to supply the muscles on the dorsum of the foot (extensors hallucis and digitorum brevis), becoming cutaneous to innervate adjacent sides of the great and second toes. SYN: nervus fibularis profundus [TA], deep peroneal nerve*, nervus peroneus profundus*, anterior tibial nerve.
