This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2019, Subject name: Orthopaedics
Foot drop is caused due to injury to? 
Select and explain. 
A. Common peroneal nerve, B. Tibial Nerve, C. Femoral Nerve, D. Obturator Nerve
A: Common peroneal nerve
Answer: A: Common peroneal nerve 
Explanation: Foot drop = it occurs due to injury to common peroneal nerve which usually gets injured at the neck of fibula. Femoral nerve injury - unable to extend the knee actively.Tibial nerve injury - unable to plantar flex the ankle or foot and no sensation over the sole and pa of calf.