Hello, with the improvement of people’s living standards, more and more people choose artificial joint replacement surgery, however, due to the lack of understanding of the surgery, often easy to cause psychological changes, especially after surgery, see more wound oozing, joint pain and swelling, poor recovery of joint function, etc. The following are some of the symptoms that tend to appear in the early postoperative period to explain to you one by one. 1, bleeding Artificial total knee joint replacement, postoperative bleeding is large, about 600 to 800ml, normal human blood volume accounted for about 7% of body weight, for example, the weight of 60 kg people, blood volume is about 4200ml, therefore, the general artificial knee joint replacement, may need blood transfusion. The most important thing to prevent postoperative bleeding is thorough intraoperative hemostasis. The amount of bleeding should be within 400 ml for the first 1 to 2 hours after surgery. If bleeding continues to exceed 1000 ml within 10 to 12 hours after surgery, attention should be drawn to the need to first stop CPM exercises, keep the knee joint flexed at 40-70 degrees, and additionally apply elastic bandages, close the wound drain, and stop bleeding with a tourniquet if necessary. If the above methods are ineffective, emergency surgical exploration should be considered. 2, wound exudate The muscles around the knee joint are few and superficially located, and poor handling can easily cause infection. If the exudate is wetting the outer dressing, it should be changed promptly. If the exudate is pure blood, the treatment is the same as above. Generally the exudate is mostly joint fluid, at this point joint puncture can be performed with pressure dressing and temporary extension and braking of the affected knee, with the aim of reducing the pressure in the joint cavity so that any small fissures in the tissue suture that may exist have a chance to heal. In addition relevant cultures can be done and treated symptomatically. 3. Pain Pain is the most common symptom after surgery, which can easily cause tension and affect other physiological functions of the person. The main target of artificial joint is the elderly, they are mostly accompanied by other system diseases, postoperative pain is not effectively controlled, it will make them more nervous, anxious, unable to rest, heavy can lead to cardiovascular accidents, pulmonary urinary tract infection, etc.. For pain. Analgesia can be provided by drug injection, patient-controlled analgesia, epidural analgesia, and oral analgesic analgesia. Late postoperative pain should also be noted. For patients with persistent localized postoperative pain, infection should be considered first. Possibilities to be considered after excluding infection include primary disease or reactive synovitis of the prosthesis, certain idiopathic synovitis, insignificant prosthesis loosening, overtightening of the prosthetic joint, and joint stiffness. Excessive patient expectations of surgical efficacy can also be a cause of postoperative pain. 4. Swelling of the lower limbs Swelling of the lower legs can last for weeks or even months. Sometimes the swelling occurs more suddenly and is accompanied by local painful symptoms. Deep vein thrombosis needs to be excluded. Infection should also be considered if it is accompanied by increased skin temperature of the knee joint, restricted movement of the lower limb and increased pain. General treatment includes elevation of the affected limb, plantar vein pump, elastic bandage, active ankle flexion and extension, etc. 5. Knee movement First of all To determine whether the postoperative knee range of motion has improved, reference should be made to the maximum flexion and extension of the knee after surgery. That is, the passive range of motion of the knee joint after intraoperative patellar repositioning and incision suturing. If, after postoperative exercise, the patient achieves the maximum ROM measured under intraoperative anesthesia, the postoperative ROM rehabilitation is considered to be achieved, even though the ROM does not reach 90 degrees. Patients are usually required to reach the maximum intraoperative measured knee ROM in flexion and extension through rehabilitation 2 weeks after surgery.