Multicentric, Prospective, Randomized, Comparing Trial Between Bypass of the Femoropoplitea by PTFE and Heparin Bounded PTFE

Inclusion Criteria: * Patients with Peripheral Vascular Diseases with complaints of invalidating claudication, rest pain, ucera or gangrene * Patients with damage of the arteria femoralis superficialis or poplitea, longer than 6 cm * Reasonable outflow arteria * Informed consent * Patient able to take part in all follow-up examinations Exclusion Criteria: * Acute ischemia of the leg * Patients with a ipsilateral inflow stenosis of more than 70% which can not be corrected before or during the surgery * \< 18 years * Pregnancy * Recent heart attack (\< 1 month) * Life expectancy less than 12 months * Known allergy to heparin * Known contrast allergy * Known bleeding or coagulation disorder