Injury of common peroneal nerve at the lateral aspect of head of fibula results in all of the following except -: (A) Weakness of ankle dorsi-flexion, (B) Foot drop, (C) Loss of ankle reflex, (D) Sensory impairment on lateral aspect of leg extending to the dorsum of foot
Answer is C. Common peroneal nerve injury may result in
-  Foot drop
-  Weakness of dorsiflexion
-  Inability to extend the toes.
-  Loss of eversion
-  Sensory loss

Anterior side of leg
Lateral side of leg
Dorsum of foot and toes (including medial side of big toe)

Common peroneal nerve injury does not affect
-  Sensation on lateral border of foot (Supplied by Sural nerve)
-  Sensation on medial border of foot (Supplied by saphenous nerve)
-  Ankle reflex