MRCP UK EXAMINATIONS

Detailed explanation-1: -The sural nerve is a cutaneous nerve, providing only sensation to the posterolateral aspect of the distal third of the leg and the lateral aspect of the foot, heel, and ankle.

Detailed explanation-2: -The sciatic nerve also provides sensory innervation to the skin of the foot and the lower leg (except for the medial leg which is innervated by the saphenous nerve).

Detailed explanation-3: -Your sural nerve is just below your skin’s surface in the back of your lower leg (calf). It enables you to detect foot position and sensations, including touch, temperature and pain. Your sural nerve can help diagnose and treat complex nerve issues.

Detailed explanation-4: -The lateral sural cutaneous nerve is a branch of the common fibular (peroneal) nerve (L4-S2) that passes over the lateral head of the gastrocnemius muscle. Upon reaching the distal one-third of the leg, these nerves merge to form the sural nerve.

Detailed explanation-5: -Anatomic Course Once formed, the sural nerve then pierces out of a fascial crura and travels from its posterior midline position wrapping laterally around the lateral malleolus; once around the lateral malleolus the name of the nerve changes to the lateral dorsal cutaneous nerve.