深静脉血栓(Deep vein thrombosis,DVT)是外科手术常见的并发症之,国外报道外科手术后DVT发生率30%～50%[1]。DVT如不能及时诊断和处理,扩展至深静脉主干,由于血栓脱落引起肺栓塞致使术后并发症的发生率和死亡率升高[2]。演变为血栓形成后遗症,将长时期影响患者的生活 Deep vein thrombosis (DVT) is a common complication of surgery. The incidence of DVT after surgery in foreign countries is reported to range from 30% to 50% [1]. DVT if not timely diagnosis and treatment, extended to the deep vein trunk, due to thrombosis caused by pulmonary embolism resulting in postoperative complications and mortality increased [2]. Evolved into sequelae of thrombosis, will affect the patient’s life for a long time