A man is struck with lathi on lateral aspect of head of fibula. Which of the following can occur as a result of nerve injury
The nerve that is injured is common peroneal nerve. It winds around neck of fibula where it divides into superficial and deep peroneal nerves. Its injury causes: Motor loss: to dorsiflexers and eveors of foot causing " foot drop".sensory loss: is to the back of leg , lateral side if the leg and most of the dorsum of foot . aicular loss to lateral side of knee joint. Deep peroneal nerve divides into: Lateral terminal branch- supplies extensor digitorum brevis and tarsal joints Medial terminal branch- supplies skin adjoining 1 st web space of toe and proximal joints of big toe. Superficial peroneal nerve : Supplies skin over lower 1/3 of lat side of leg ,skin over entire dorsum of foot except lat border supplied by sural nerve , medial border upto base of great toe supplied by saphenous nerve cleft between 1 st and 2 nd toes supplied by deep peroneal nerve. Ref: BD Chaurasia ( 7 th edition pg 192)
Loss of sensation of lateral foot
Loss of sensation of adjacent sides of 1st & 2nd toe
Inversion inability
Dorsiflexion not possible
Lower limb