RKR surgery is the acronym for artificial knee replacement, which is used to treat severe degenerative knee disease, or traumatic knee arthritis. Artificial knee replacement surgery involves removing all of the damaged surface of the knee cartilage and placing a knee prosthesis to reconstitute a new knee joint. Artificial knee replacement technology has been very mature, widely used in clinic, if properly protected, generally can be used for about 20 years, after the operation in the exercise of the lower limbs to avoid venous thrombosis at the same time, should avoid the activities of the knee joint, can reduce the patient’s pain and damage to the surface of the joints, and should also avoid prolonged standing and walking for a long time, to reduce friction on the surface of the joints. It is recommended to complete this surgery in the orthopedic department of a regular hospital.