Retract the proximal portion of the peroneus longus muscle to expose the superficial peroneal nerve , which passes along the posterior aspect of the peroneus brevis muscle. Trace the course of the nerve proximally to the point at which it originates from the common peroneal nerve [the common peroneal nerve lies anterior to the retractor; the superficial peroneal nerve is held by the probe]. The common peroneal nerve passes over the posterior aspect of the head of the fibula and then winds around the lateral surface of the neck of the fibula. At this point it divides into the superficial peroneal nerve [probe] and deep peroneal nerve [probe].
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