下肢深静脉血栓形成是指血液在深静脉内不正常凝结,阻塞静脉腔,导致静脉回流障碍,如未予及时治疗,下肢静脉血栓导致的静脉瓣膜功能不全及并发的肺栓塞是患者劳动力及生命安全的一大危险。左下肢血栓形成远远高于右下肢,特别是原发性髂-股静脉血栓形成。有时下肢静脉 Lower extremity deep venous thrombosis refers to the blood in the deep venous abnormal coagulation, blocking the venous cavity, resulting in venous return disorder, if not treated promptly, lower extremity venous thrombosis caused by venous valve insufficiency and concurrent pulmonary embolism is the patient labor and life A big danger to safety. Left lower extremity thrombosis is much higher than the right leg, especially the primary iliac - femoral vein thrombosis. Sometimes lower extremity veins