The External Saphenous Nerve leaves the great sciatic, and passes over the outer head of the gastrocnemius under cover of the biceps femoris, where it receives a branch of the external popliteal nerve. It then passes down the leg in company with the saphenous vein on the outer and front part of the gastrocnemius tendon, and continuing its course over the hock joint, is ultimately expended in the skin of the outer part of the metatarsus.