Peroneal Nerve

– common peroneal nerve is derived from (L4, L5, S1, S2) as a part of the sciatic nerve

– posterior component, supplies short head of biceps femoris in thigh, crosses posterior to lateral head of gastrocnemius, and becomes subQ behind head of fibula

– it penetrates the posterior intermuscular septum, and becomes closely opposed to the periosteum of the proximal fibula

– it then divides into superficial & deep peroneal nerves

– nerve also gives off a lateral sural cutaneous brach which joins with the the medial sural cutaneous nerve (from tibial nerve) to form the sural nerve.

Wheeless’ Textbook ofOrthopedics. Retireved Aug. 20 2009 from


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