英语语法分析

Objective To analyze the causes and treatments of the recurrence of varicose veins after varicotomy in lower extremity.

目的探讨下肢静脉曲张术后复发原因及外科治疗方法。

The insufficiency of deep venous valves was the main cause resulting in the recurrence of varicose veins after varicotomy in lower extremities.

结论下肢静脉曲张术后复发的原因较为复杂，其主要原因是深静脉瓣膜功能不全。