Lower Limb Veins Anterior Posterior: The lower limb has anterior and posterior venous pathways, including superficial veins like the great and small saphenous veins, and deep veins like the femoral and popliteal veins.
Varicose Vein: Varicose veins occur when valves in superficial veins become incompetent, causing blood to pool and the veins to become enlarged, twisted, and visible beneath the skin, typically in the legs.