Patients who have had an artificial knee replacement can recover by following medical advice and adhering to effective rehabilitation exercises, such as straightening exercises, can return to a good state. The recovery time involves muscle strength exercises and varies from patient to patient, with some patients recovering in 6 months. Patients can walk and squat like normal people after recovery, and it is not at all obvious from the appearance of their gait that they have had a knee replacement. Although artificial knee replacement surgery solves the patient’s knee problems, such as pain, knee mobility is greatly improved, but some of the movements can not be achieved, after all, replaced with mechanical, artificial joints, there is a certain life span. The new artificial knee joint is now made of cobalt-chromium-molybdenum alloy, and the middle friction pad is a polyethylene spacer, which is highly cross-linked or specially treated to be very wear-resistant and can theoretically last 30 years. Artificial joints are used in the human body for a long time, and artificial joints are not the same as normal joints, so artificial joints are different depending on the type of prosthesis, and the angle of movement is very different from normal joints, so you need to pay attention to joint wear.