Knee arthritis is particularly common in the middle-aged and elderly population. It causes joint fluid accumulation, swelling, osteophytes, cartilage wear, narrowing of the gap, leg deformation, inability to squat and walk up and down stairs, pain, difficulty in walking, and in severe cases, inability to walk. There are more than one hundred types of arthritis, of which the two most common are osteoarthritis and rheumatoid arthritis. According to statistics, 50% of people over the age of 50 suffer from osteoarthritis, 90% of women and 80% of men over the age of 65 suffer from osteoarthritis, and the rate of loss of walking function is as high as 50%. The only way to ultimately relieve the patient’s joint pain and restore walking is to have an artificial knee joint replacement. The artificial knee joint is made of a non-toxic, non-reactive metal femoral condyle and tibial plateau, a patella and a meniscal liner made of ultra-high polymer polyethylene, and is designed and manufactured to resemble the human knee joint. These inanimate artificial parts are inserted into the knee joint to replace the diseased knee joint, which is called artificial knee arthroplasty. Instead of removing the entire knee joint, only the worn and damaged joint surface and bone growth are removed and an artificial joint is implanted, just like a “dental implant”, to eliminate the deformity of the knee joint, relieve pain, and restore the normal smooth movement of the joint. Generally, you can walk and rehabilitate with the aid of a walker 3 days after surgery. Foreign statistics show that the longest life expectancy of an artificial knee joint is over 20 years, making it a safe and reliable treatment. Why give up the best years of your life to constant pain and increasing difficulty walking? A healthy joint is the best, a perfect artificial joint is only the second best, but it is certainly a “boon” for patients suffering from pain. In addition to the quality of the materials and workmanship of the artificial joint, the patient’s condition and the amount of exercise, the post-operative results and the service life of the artificial knee are also closely related to the surgeon’s surgical technique, the hospital’s surgical environment (class 100 laminar flow in the surgical area and class 1000 in the peripheral area) and perfect post-operative rehabilitation guidance. The Ministry of Health has stipulated that artificial knee replacement must be performed by a tertiary care hospital with qualifications and experience in artificial knee joint replacement technology. The highest age of patients undergoing artificial joint surgery in the Department of Orthopaedic Surgery at the General Hospital of Pingma Medical Group (Grade A, Ministry of Health) was 101 years old. Case 1, female, 70 years old, painful deformation of both knees, difficulty in walking X-ray of both knees in weight-bearing position, osteophytes, loss of joint space After simultaneous artificial joint replacement of both knees, straightening, pain disappeared, normal walking Post-operative X-ray showed disappearance of bone spurs, normal gap Post-operative X-ray showed that he could do golden chicken independence 10 days after surgery Post-operative X-ray showed that he could practice walking up and down stairs independently 13 days after surgery under the guidance of nurses Both knees had pain, severe deformation, cartilage wear, osteophytes, and difficulty walking, after the artificial knee surface replacement, her legs became straight and she walked normally.