The veins in your legs play a vital role in pumping blood to your heart. Elevation doesnt always eliminate venous pain but it will almost always help. Arterial Insufficiency Vs Venous Insufficiency Nurse Training Wound Care Nursing Nurse Healthy leg veins contain valves that open and close to assist the return of blood back to the heart Venous insufficiency or venous reflux disease develops when the valves that keep blood flowing out of the legs and back to the heart become damaged or diseased Venous insufficiency is the result of over-dilation of the venous vessels in. Legs Up The Wall Venous Insufficiency . Their valves are a one-way road and if the walls become weakened or damaged the blood is unable to travel upward causing it to head back down the legs. In healthy veins there is a continuous flow of blood from the limbs back toward the heart. That causes blood to pool or collect in the veins. CVI usually occurs in the legs and develops when valves in leg veins dont wo