Methods Strips of autogenous saphenous vein, autogenous fascia lata and Gore-Tex vas-cuear graft were respectively used to constrict the femoral vein valves in the dogs of the three groups.

• 方法将自体大隐静脉、阔筋膜和人造血管片分组环包于犬股静脉上,术后不同时期观察长、宽及厚度变化。