Main Entry: common peroneal nerve Function: noun : the smaller of the branches into which the sciatic nerve divides passing obliquely outward and downward from thepopliteal space and to the neck of the fibula where it divides into the deep peroneal nerve and the superficial peroneal nerve that supply certain muscles and skin areas of the leg and foot called alsolateral popliteal nerve,peroneal nerve
common peroneal nerven. A terminal division of the sciatic nerve, passing through the lateral portion of the popliteal space to opposite the head of the fibula where it divides into the superficial and the deep peroneal nerves.