Artificial joint replacement refers to the use of metal, polymer polyethylene, ceramic and other materials to make artificial joint prosthesis according to the form, structure and function of human joints, which is implanted into the human body through surgical techniques to replace the function of the diseased joints and achieve the purpose of relieving joint pain and restoring joint function. So after surgery, what issues should be paid attention to in order to speed up the patient’s recovery? Postoperative care of each system 1. Respiratory system. Ultrasonic nebulization and assisted sputum excretion should be performed as necessary according to the patient’s recovery after surgery. 2.Circulatory system. Postoperative monitoring of electrocardiography, blood pressure and oxygen saturation is routinely performed. According to the patient’s preoperative underlying diseases or not, apply the corresponding drugs to maintain treatment. If the ECG or blood pressure monitoring is significantly abnormal compared with preoperative, effective corresponding treatment should be carried out. Maintain fluid balance, maintain normal blood routine, blood biochemistry, liver and kidney function and other indicators. 3. Digestive system. Routinely apply H2 receptor blockers, proton pump inhibitors and other anti-acid drugs postoperatively to prevent the occurrence of stress ulcers. Early application of enteral nutrition can reduce the occurrence of complications. How to prevent complications Prevent dislocation of the prosthesis, pay strict attention to the patient’s position and the position of the affected limb, pay attention to the correct posture when moving the patient and turning over, strictly prohibit flexion and inward traction of the affected hip, prevent the limb from internal rotation and external rotation, limit the flexion of the hip joint to 70° or less within 6 weeks after surgery, separate the legs in sitting position, place the affected limb on top and in the straight position when lying on the side, and put a pillow between the legs. After surgery, elevate the foot of the bed to improve blood flow to the affected limb, avoid squeezing the rouge fossa and calf, actively perform ankle joint and quadriceps muscle stretching and contraction activities, and instruct the patient to perform deep breathing and coughing movements in appropriate amounts. Pay attention to the warmth of the end of the limb, you can wear elastic stockings. Post-operative rehabilitation is important For the prognosis of orthopedic patients, post-operative functional exercise plays a very important role. On the 4th-7th postoperative day, the patient generally recovers and can sit up, perform passive exercises in bed, use continuous passive motion (CPM) machine for functional recovery, and limit the degree of activity to 30-40° at the beginning. The mobility is gradually increased, aiming to reach or exceed 90° after 2-3 weeks of exercise. Lateral position with the affected limb on top, doing gravity-free flexion and extension of the knee joint. The CPM machine is discontinued 2 weeks after surgery, and the patient walks on a level path with the aid of a walker under the guidance of a chaperone. The knee joint is mainly in extension and flexion, and the range of motion should be measured regularly for rehabilitation guidance. Patients can also be allowed to perform squatting exercises with bed support and passive knee flexion until the patient cannot tolerate it, in a gradual manner. Postoperative rehabilitation is a very important factor in the outcome of joint replacement surgery. For a long time, many patients only pay attention to the surgical operation itself and neglect postoperative rehabilitation, which is extremely wrong.