Post-operative rehabilitation requires a process, the length of which varies from person to person, but in general, patients can get out of bed and walk 2 to 3 days after the operation, and it takes about 3 months to resume normal activities without any discomfort. During this period, patients may have different degrees of discomfort in the joints, but most of them will gradually get used to it and go through the “break-in period”. I. Postoperative period up to two weeks. During this period of time, even if you are hospitalized or go home, you will still have mild pain in the joint area because the incision has not been removed, which is sometimes not obvious due to the oral anti-inflammatory and analgesic medication. During this period of time, the body needs to recover and adjust, adequate rest, reasonable nutrition, physical strength will soon be restored. During the hospitalization period, under the guidance of medical personnel, scientific exercises should be carried out, knee flexion should be more than 90 degrees, and the best straightening is close to 0 degrees, i.e., completely straightened. Second, two weeks to six weeks after surgery. During this period of time, the patient usually recovers in the family environment. Those who are able to do so recover in a rehabilitation center. For the former, this period will be a test. Because about three weeks after the operation, the human body damaged tissue repair into the soft tissue mechanization period, usually the patient will feel the joints tight and hard numbness and discomfort, and even affect the night rest. Individuals with poor tolerance may experience increased pain to the point of suspecting a problem with the surgery. During this period, patients often no longer use pain medication, so they do not feel as good as they did during the hospitalization period. Discharged home from the doctor’s supervision, coupled with family loved ones care, personal inertia, sometimes rehabilitation exercise is very not active. So during this time should pay attention to the following points: 1, adhere to the use of anticoagulant drugs, such as oral aspirin generally need to be served until two months after surgery. For those who take medication before surgery because of cardiovascular and cerebrovascular diseases, the medication will be resumed at home after surgery. 2.During the recovery period, if there is edema in the lower garment, which is heavy in the afternoon and evening and returns to normal in the morning, it is mostly lymphedema, which can be recovered by taking oral decongestant, wearing elastic stockings and elevating the affected limbs. 3.If you feel pain, you can take anti-inflammatory drugs at night, which will help you rest at night and recover the next day. 4. You can take a bath 3 days after the wound stitches are removed. 5.Follow the rehabilitation exercise methods taught by the doctor during hospitalization, and gradually increase the number and intensity of rehabilitation. The knee can be flexed up to 100 degrees and should be fully straightened. 6.If there is obvious heat sensation in the knee after exercise, intermittent cold compress or alternating hot and cold external compress can be applied. 7.Observe the swelling of the joint area, if there is any unexplained oozing or redness, contact the surgeon in time to exclude the possibility of poor healing or infection of the incision. 8.Return to the hospital to find a doctor for a review. Third, six weeks to three months after surgery. During this time, patients can recover quickly. Discomfort in the incision and joint area will be significantly reduced or disappear completely. Recovery of physical strength and improvement of appetite and sleep quality allow patients to resume normal activities or go to work. It is important to understand that joint mobility can still be improved, such as flexion of the joint over 140 degrees and strength to walk up and down stairs. If the incision is in the anterior midline of the knee, there will be patchy skin sensory deficits or abnormalities on the lateral side of the knee that will recover without treatment in about 1 year. A second review should be performed to allow the surgeon to assess the results of the surgery and guide the next step in the rehabilitation method. Fourth, six months after surgery. For the vast majority of patients, this is the time to simply enjoy the advantages and benefits of artificial knee replacement surgery and live life to the fullest. In later life, you should prevent injuries to the joint area. Any bad teeth, UTI, foot odor, etc., should be actively dealt with, and antibiotics should be used for a short period of time before and after tooth extraction. It is best to have a review once a year for 1 to 2 years after X. If there is no discomfort in the future, then there is usually no need for review.