Vein valves that do not work will cause blood to flow backward in the veins into the legs. This leads to problems with swelling, skin changes and even breakdown of the skin (ulcers). There are ways to stop this abnormal backwardflow of blood by fixing the vein valves. If the valve is still present but just not meeting properly, the valve can be fixed with fine sutures. If the valve is totally damaged, one must place the refluxing system below a working valve in another part of the leg veins (transposition) or must take one from the arm as a transplant. Other techniques are being investigated but so far these are the more common ways to fix the problem.