SURAL NERVE

 

ORIGIN: Tibial nerve.

COURSE/DISTRIBUTION: This is cutaneous branch of the tibial nerve. It arises in the popliteal fossa and descends between the two heads of the gastrocnemius and then descends to variable positions at the back of the leg and communicates with the peroneal communicating branch of the common peroneal nerve at the back of the leg. It then runs down to the lateral aspect of the tendo calcaneus accompanied by the short saphenous vein to the interval between the calcaneus and the lateral malleolus. This nerve supplies the skin of the lateral 1/3 and posterior 2/3  of the leg. It also supplies the skin on the lateral aspect of the foot up to the little toe. 

BRANCHES:

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         Cutaneous branches

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         Vascular branches

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         Medial calcaneal branches

ROOT VALUE: L5,S1,2.

 

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