The saphenous nerve is an exclusively sensory nerve that arises from the femoral nerve as its longest branch. It runs to the adductor canal and enters into it as it penetrates the vastoadductor membrane, extending along the medial side of the knee joint and the lower leg together with the great saphenous vein down to the medial ankle. Below the knee joint, the saphenous nerve gives off the infrapatellar branch which supplies the skin below the patella. The remaining branches, the medial crural cutaneous branches, supply the skin of the anterior and medial aspects of the lower leg. The supplied area extends on the anterior side over the edge of the tibia and may reach to the great toe along the medial aspect of the foot.