Objective:To investigate the therapeutic effect of deep venous valve reconstruction using substitute valve in popliteal vein of patients with severe primary deep venous insufficiency (PDVI).
Methods:One hundred and six PDVI patients with CEAP classification of 4 to 6 class were included and randomly assigned as observation group and control group. Patients in the observation group underwent the combined treatment of substitute valve operation and superficial vein phlebectomy, and patients in the control group underwent superficial vein phlebectomy alone. The venous clinical severity scores (VCSS) of patients of the two groups were compared before surgery and 14 days and 2 years after surgery.
Results:The total VCSS，scores for pain, varicosity, inflammation and ulcer of all patients obviously decreased 2 weeks after surgery (P＜0.05), but no difference was noted between the two groups (P＞0.05). The total VCSS, and scores for varicosity and edema in the observation group were significantly lower than those in the control group (P=0.039, P=0.026 and P=0.021, respectively) 2 years after surgery.
Conclusions:For PDVI patients with CEAP classification of 4 to 6 class and complicated with severe venous edema, the combined treatment of substitute valve operation and superficial vein phlebectomy is better than superficial vein phlebectomy alone in long-term outcome.

Venous Insufficiency/surg; Valve Insufficiency, ; Deep Venous; Substitute Valve of Popliteal Vein