Recently, I have come across individual patients who have their first follow-up appointment several months after their artificial knee replacement because of unsatisfactory limb recovery, which is really undesirable. Usually, the doctor will explain to the patient at the time of discharge what to do after discharge, such as when to remove the stitches, what medication to take, how to carry out rehabilitation training, and when to have the first outpatient follow-up appointment, or provide a clear paper describing the above precautions. However, there are still some patients who do not attend the follow-up appointments on time for various reasons, such as being too troublesome, traveling a long distance, or having busy children. Although most of these patients do not affect their recovery, it is always bad if they do, and both patients and doctors will regret it. Here it is necessary to re-emphasize the time requirements and significance of postoperative follow-up. I. Postoperative follow-up time: the first postoperative follow-up is usually one month to one and a half months after surgery. The second is three months after surgery. The third is six months after surgery. The fourth is one year after surgery. The first and second visits are particularly important. If you can return to the hospital for follow-up, you must come. During the first follow-up, the doctor will focus on the healing of the incision, edema of the joints and lower limbs, joint mobility and gait, lower limb strength and coordination, etc. X-rays may be reviewed. X-rays may be reviewed. Based on the comprehensive judgment, the doctor will give further rehabilitation advice. If there is perhaps discomfort after surgery, the doctor will adjust the medication. At the second follow-up visit, most patients have recovered well and the doctor will check if there is any delay in recovery. If so, further rehabilitation and psychological counseling will be helpful. The first three months after surgery is a “bump in the road”. After the first three months of rehabilitation, most patients have sufficient ability to control the new joint. Individuals with delayed recovery will still have a lot of room for recovery as long as they keep exercising after the second follow-up appointment. The third follow-up is six months after surgery, the joint function recovery is close to maximization, the doctor usually does not need to give you any more excessive medical advice, you also have enough confidence and ability to control your own body. The fourth follow-up appointment is one year after the surgery, and we will say hello to each other. There is a clear time dependence on the speed of recovery from artificial knee replacement surgery, and rapid recovery requires the full mobilization of the patient’s own initiative. Generally speaking, those who are positive and optimistic recover quickly, while those who are overly concerned about details recover slowly. Those who are overly concerned with details recover more often than not. It is very important to point out that recovery is characterized by individual differences. The doctor will also pay attention to the patient’s state of mind and emotional changes during the interview. Encouragement and supervision from family members are important for the patient’s eventual recovery.