It leaves the pelvis at the posterior surface of the sciatic nerve. It continues distally in the thigh, breaking up into terminal branches. Perineal branches go to the skin of the medial part of the thigh and the adjacent part of the scrotum or labium majus. One of these branches, the long pudendal nerve, runs medially dorsad to the ischial tuberosity. Inferior cluneal branches go to the skin of the lower medial part of the buttock.
Femoral branches supply the skin of the back of the thigh and calf.
Their free margins are concave and thin. All rights reserved.