1. Knee surface replacement surgery is a medium-sized knee surgery, and it is still a minor surgery compared with the surgery for severe joint injury of the knee, the reconstruction of anterior and posterior cruciate ligaments of the knee at the same time, and the joint transplantation of cartilage and meniscus of the knee. Therefore, there is no need to be afraid of surgery for patients who will receive a surface knee replacement. 2. Another reason why many patients are afraid of surface knee replacement surgery is because they mistakenly believe that they will have to remove all of their joints and replace them with artificial joints. In reality, the surgery only removes one layer of the damaged part of the patient’s joint surface and places an artificial joint of the same thickness on the surface of the lesion. Strictly speaking, it is only a surface replacement of the damaged joint, not the removal of the entire joint. 3. The third concern of patients is that they will not be able to move around for a long time after the knee surface replacement surgery and will need to be taken care of. This concern is also superfluous. As part of the post-operative rehabilitation routine, patients can walk for a short period of time on the third day after surgery with the help of crutches, and the range of motion increases day by day thereafter, and patients can wash their faces, go to the bathroom and do some necessary things by themselves one week after surgery. Generally speaking, one week after surgery, patients can complete the most basic self-care of life. 4. There are also some patients who are afraid that the surgery will fail, and this feeling is understandable. However, if patients know that the knee surface replacement surgery is based on instrument positioning and that the surgical steps are repeatable for each patient, they will be at ease with the surgical procedure. This is because every intraoperative operation is instrumentally positioned and is regulated, not something that the surgeon can do on a whim. Of course, a few special patients will be encountered, and the special characteristics of the patients can be solved by careful preoperative design and intraoperative operation adjustment. 5. The years of use of the artificial joint after surgery is also one of the most important concerns of patients. The design and materials of the current knee surface replacement prosthesis have been passed, and if the selected prosthesis is of good quality and the surgical operation and postoperative rehabilitation are reasonable, the completion rate of 20 years after replacement can still be maintained at 90%. In other words, in 100 patients, 20 years after surgery, the replacement joint is still intact in 90 patients.