The common peroneal nerve is extremely vulnerable to injury as it winds around the neck of the fibula if that happens, clinical features are:Motor loss-a)The foot drop is due to paralysis of muscles of anterior compament of the leg (dorsiflexors of the foot) {dorsiflexion not possible}.b)Loss of extension of toes due to the paralysis of extensor digitorum longus & extensor hallucis longus.c)Loss of eversion of the foot due to paralysis of peroneus longus & brevis.Sensory loss- Sensory loss on the anterior aspect of the leg & whole of the dorsum of foot except the cleft between the great & second toes, which is supplied by the branch from the deep peroneal nerve.