Leg bypass surgery is used to treat peripheral vascular disease affecting the legs, which may result in disability or limb threatening ischemia. The usual surgery is a graft from the femoral artery in the groin to the popliteal artery either above or below the knee. This operation may restore pulses in the patient’s foot and enable the patients to walk without pain and cramping. It also can frequently help avoid an amputation when the patient’s circulation is very poor.