Abdominal aorta blockage

i am a 35 years male. I was operated 3 years back for abdominal aorta bi femoral blockage. a graft was placed of 16mmx19mm. after 1 year i go through ct angiography and it shows total left side block again. after taking medicines my caletral are working but now after 2 years of medicine i am again feeling some heavyness in my both legs, adn its hard to walk fast and long. i am taking anticlogant and some asprine for blood.
now what should i DO is there any other technique of surgery exept total abdomine opening.