The purpose of the great vein is delivery of blood from the ankle, lower leg, and thigh to the femoral vein. Along its length are 10 to 20 one-way valves that keep the blood from flowing back ...

Interv Cardiol. 2012;4(5):527-536. The venous anatomy of the lower leg is made up of two axial systems, a superficial and a deep venous system. The superficial system lies above the muscle fascia ...