What are the Greater Saphenous Veins (GSV)?
This is the longest superficial vein of the of the legs. It runs inside the legs from the sole of the feet up to the groin where they connect to the deep veins. The GSV is commonly the culprit in the condition known as Venous Reflux Disease and is the most commonly treated vein. The deep veins constitute the main venous channels that drain blood from the legs back to the heart by the combined activity of walking (leg movements during sleep) and breathing.
