Venous thrombosis of lower limbs is caused by many factors: first, this disease usually occurs in patients who have been in bed for a long time. Some patients may also be sedentary, or habitually riding a flight without moving a posture and habitually squatting. This situation will generally lead to blood block or congestion, and eventually lead to venous thrombosis. Second, some patients may be caused by bone surgery. However, some patients have lower limb fractures, plaster casts, limited thematic activities of limbs, and the thigh muscles can't move normally, which eventually leads to blood block.

There are many reasons for the patient's foot vascular blockage. For example, the patient is an old man with high blood pressure, blood sugar, blood sugar and blocked blood vessels in his legs. Considering that it is caused by arteriosclerosis, patients should pay attention to low-salt and low-fat foods, take rosuvastatin calcium tablets orally, reduce blood fat and smooth spots. If the patient is a postoperative patient, it may be caused by venous thrombosis. This is mainly due to the damage of blood vessel wall at the operation site and venous thrombosis after blood block. Thrombosis falls, and as the blood circulation system reaches the lower limbs, it will block the blood vessels.

There are two kinds of blood vessel blockage in legs: the first kind, venous blood vessel blockage, mostly venous thrombosis, is caused by blood block, intimal inflammation and hypercoagulability of human body. Common diseases in clinical medicine can be caused by bedridden, reduced special activities, rheumatic diseases, influenza, malignant tumors and other factors. In the second case, aortic occlusion and arterial occlusion are mostly due to the increase of spots in blood vessels, which leads to the narrowing of blood vessel lumen until occlusion. This blockage is likely to cause ischemia and atrophy of the body, and high amputation is necessary. In view of the blockage of aorta, it is necessary to rebuild blood vessels or implant stents in blood vessels to repair blood supply. The blockage of venous blood vessels should be treated according to anticoagulation, so that most venous thrombosis can be dissolved and then reflux can be repaired.

Leg vascular obstruction includes two situations, one is venous thrombosis (including superficial venous thrombosis and deep venous thrombosis), and the other is myocardial infarction stenosis. Symptoms of venous thrombosis: superficial venous thrombosis can cause local swelling and pain, while deep venous thrombosis can be manifested as swelling of lower limbs, tenderness of calf gastrocnemius muscle and pain of gastrocnemius muscle during exercise. Deep venous thrombosis has the risk of pulmonary thrombosis and death when venous thrombosis falls. The main manifestations of myocardial infarction stenosis are generally pain during special activities of lower limbs, intermittent claudication of lower limbs, severe symptoms may be accompanied by resting pain, and some ulcers will not heal for a long time. It is recommended to seek medical treatment outside the blood vessel.