 It provides sensory innervation to the skin over the upper third of the lateral aspect of the leg via the lateral sural cutaneous nerve.It gives the aural communicating nerve which joins the sural nerve in the midcalf.Chronic fibular (peroneal) neuropathy can result from, among other conditions, bed rest of long duration, hyperflexion of the knee, peripheral neuropathy, pressure in obstetric stirrups, and conditioning in ballet dancers.