NCIt definition : One of two major branches of the sciatic nerve. It innervates the muscles of the posterior
aspect of the lower limb, the muscles of the plantar aspect of the foot, as well as
the skin on the posterior aspect of the leg and on the sole of the foot.;
Alternative definition : CDISC: A branch of the sciatic nerve that divides into the medial and lateral plantar
nerves, and which innervates the muscles of the crus and the skin of the tarsus.;