title: [Deep venous incompetence of legs: experimental studies].
abstract: OBJECTIVE
  To seek best wrapping materials of valvular wrapping operation of deep veins in the lower limbs and to understand the value of diagnostic value of duplex scanning for incompetence of the deep veins and the function of the popliteal valve.
  
  
  METHODS
  Strips of the autogenous saphenous vein, autogenous fascia lata and PEFE graft were used respectively as the material for valve constriction. The results were compared of duplex scanning and trans-popliteal venography.
  
  
  RESULTS
  In the saphenous vein and fascia lata groups, diffuse fibrosis and marked narrowing of the femoral vein were found, whereas in the vascular graft group the graft was intact without prominent fibrosis and narrowing of the vein. The accurate rates of duplex scanning and trans-popliteal venography were 91.86%. at the same time the thigh and popliteal valve was closed when held breath.
  
  
  CONCLUSIONS
  Vascular graft is the best constriction material. Duplex scanning is a important method. Popliteal valve is an important barrier for protecting the function of the deep vein.
authors.affiliation: Department of Vascular Surgery, 107th Central Hospital, Chinese People's Liberation Army, Yantai 264002.
authors.forename: M
authors.initials: M
authors.lastname: Qu
authors.forename: Y
authors.initials: Y
authors.lastname: Yu
authors.forename: P
authors.initials: P
authors.lastname: Zhang
authors.forename: M
authors.initials: M
authors.lastname: Jiang
authors.forename: L
authors.initials: L
authors.lastname: Xue
mesh_terms: D000328:Adult; D000818:Animals; D001807:Blood Vessel Prosthesis; D004285:Dogs; D005206:Fascia Lata / Q000601:surgery; D005268:Femoral Vein / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D008875:Middle Aged; D011138:Polytetrafluoroethylene; D011152:Popliteal Vein / Q000000981:diagnostic imaging / Q000502:physiology; D012501:Saphenous Vein / Q000601:surgery; D018616:Ultrasonography, Doppler, Duplex; D014656:Vascular Surgical Procedures; D014689:Venous Insufficiency / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*
chemical_list: D011138:Polytetrafluoroethylene