The great saphenous (sa-fuh-nuhs) vein plays a key role in blood circulation. As the longest vein in the body, it carries blood from the legs back toward the heart, using one-way valves to maintain momentum. When these valves become damaged or weakened, the great saphenous vein (GSV) becomes more prone to a condition called vein disease, which can lead to the development of the varicose veins problem. USA Vein Clinics’ team of experienced specialists uses minimally invasive procedures to target the affected veins.
https://www.usaveinclinics.com..../blog/what-is-the-fu