Hi, thanks for you query at Healthcare Magic. Since your mother is diabetic, she is susceptible for one of diabetic complications, in this case peripheral artery disease (PAD). PAD occurs when arteries in the limbs (most often the legs) become narrowed by cholesterol-rich material called plaque. Because PAD interferes with circulation, advanced cases increase the risk for gangrene and amputation. Patients with PAD are also at increased risk for other types of atherosclerosis, including heart attacks and strokes. Besides diabetes, other risk factors of PAD are: 1. Smoking 2. High level of cholesterol and lipid level 3. Hypertension One of the treatment of PAD is a procedures that aimed to open blocked blood vessels in the case that medications cannot help anymore. The types of revascularization that can be performed on peripheral artery disease are: 1. Artery bypass graft surgery, which takes blood vessels from other parts of the body to become shorts of narrowed or narrowed arterial blood flow. 2. Angioplasty is a surgical to dilate of a blocked or narrowed portion of the artery by inflating a small balloon inside a blood vessel. About the pain in the legs after leg surgery maybe happen because of: 1. Bypass does not work 2. Damage to a nerve that causes pain or numbness in your mother leg 3. Infection to surgical cut 4. Injury to nearby nerves. Most of the patients may not have symptoms anymore after the procedures, even when walking. If your mother still have symptoms, she should be able to walk much farther before they start. If your mother have blockages in many arteries, her symptoms may not improve as much. Make sure she take some rest and can take ibuprofen (if not allergy) as a painkiller. Contact her treating doctor if it s still happen for more than 4 weeks after recent surgery. Take care