Has the "substitute valve" at the popliteal vein solved the problem of venous insufficiency of the lower extremity?
D004487:Edema / Q000628:therapy; D006439:Hemodynamics; D006801:Humans; D007511:Ischemia / Q000601:surgery; D007866:Leg / Q000098:blood supply*; D008722:Methods; D010690:Phlebography; D011152:Popliteal Vein / Q000601:surgery*; D012883:Skin Ulcer / Q000628:therapy; D013710:Tendons / Q000601:surgery*