Perfected technique by the "substitute valve" operation on the popliteal vein; comparative venous pressure measurement before and after the operation and results of 11 years follow up.
D005500:Follow-Up Studies; D006801:Humans; D008722:Methods; D011152:Popliteal Vein / Q000601:surgery*; D014689:Venous Insufficiency / Q000601:surgery*; D014690:Venous Pressure