This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Injury of common peroneal nerve at the lateral aspect of head of fibula results in all of the following except - 
Select and explain. 
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
C: Loss of ankle reflex
Answer: C: Loss of ankle reflex 
Explanation: 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