Joint replacement surgery should be artificial joint replacement surgery, any surgery has a certain risk, artificial joint replacement surgery is no exception, after rigorous pre-operative assessment, under the operation of professional doctors, the relative risk is small, but not all patients will appear, the possible risks mainly include infection, joint dislocation, lower extremity venous thrombosis. 1. Infection: Common artificial replacement surgeries include knee replacement surgery and hip replacement surgery, which need to cut the patient’s superficial skin in order to do the replacement surgery. If the patient does not pay attention to hygiene and cleanliness after the operation, it is easy to cause the risk of infection. 2. Lower extremity venous thrombosis: patients with joint disorders are prone to thrombosis due to long bed rest before surgery, slow venous blood flow, and stagnation of cellular components in the blood on the walls of the blood vessels. In addition, patients need to use plaster brakes and below-knee pads to recuperate in bed after the operation, which slows down the blood flow in the deep veins of the lower limbs and increases the risk of lower limb venous thrombosis. 3. Joint dislocation: After artificial joint replacement surgery, the range of motion of the joints is limited and flexibility is reduced, so when the patient performs internal joint retraction and internal rotation, the risk of joint dislocation is easy to occur. It is recommended that patients who have undergone artificial joint replacement surgery should avoid smoking and drinking during the recuperation process, avoid spicy and stimulating food to avoid aggravating the condition, and inform the doctor in time if they have any uncomfortable symptoms after the surgery to avoid delaying the condition.