two twigs to flexor | | | | | | | | | | | | | | | | | | | | | | | ischiofemoralis | | | | | | | | | | | | | | | | | | |x|x|x|x|x independent extra branch | | | | | | | | | | | | | | | | | | | | | | | innervates extensor | | | | | | | | | | | | | | | | | | | | | | | iliofibularis | | | | | | | | | | | | | | | | | | | | |x| | branch to femorocruralis | | | | | | | | | | | | | | | | | | | | | | | innervates gastrocnemius| | | | | | | | | | | | | | | | | | | | | | | pars media | | | | | | | | | | | | | | | | | | | | | |x| | | | | | | | | | | | | | | | | | | | | | | | Peroneal nerve | | | | | | | | | | | | | | | | | | | | | | | superficial and deep | | | | | | | | | | | | | | | | | | | | | | | peroneal nerves do not | | | | | | | | | | | | | | | | | | | | | | | join |x| | | |x| |x|x| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tibial nerve | | | | | | | | | | | | | | | | | | | | | | | independent extra branch | | | | | | | | | | | | | | | | | | | | | | | innervates flexor | | | | | | | | | | | | | | | | | | | | | | | perforatus digiti IV | | | | |x|x| | | | | | | | | | | | | | | | | anastomosis involving | | | | | | | | | | | | | | | | | | | | | | | posterior division | | | | |x|x| | | | | | | | | | | | | | | | | branch to gastrocnemius | | | | | | | | | | | | | | | | | | | | | | | pars externa an | | | | | | | | | | | | | | | | | | | | | | | independent division | | | | | |x| | | | | | | | | | | | | | | | | branch to gastrocnemius | | | | | | | | | | | | | | | | | | | | | | | pars media innervates | | | | | | | | | | | | | | | | | | | | | | | femorocruralis |x| | | | |x| | | | | | | | | | | | | | | | | extra branch innervates | | | | | | | | | | | | | | | | | | | | | | | flexor perforatus | | | | | | | | | | | | | | | | | | | | | | | digiti III | | | | | | | | | | | | | | | |x| | | | | | | branch to gastrocnemius | | | | | | | | | | | | | | | | | | | | | | | pars interna perforates | | | | | | | | | | | | | | | | | | | | | | | plantaris | | | | | | | | | | | | | | |x| | | | | | | | branch to gastrocnemius | | | | | | | | | | | | | | | | | | | | | | | pars interna innervates | | | | | | | | | | | | | | | | | | | | | | | plantaris | | | | | | | | | | | | | | | | | | | | |x| | ---------------------------+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+--+-+-+-+-+-+- TABLE 6. NUMBER OF NERVE VARIATIONS IN COMMON BETWEEN THE LEGS STUDIED