Artificial joint replacement qualifies as one of the greatest breakthroughs in orthopedics in recent decades. It has been used to treat shoulder, elbow, wrist, interphalangeal joint, hip, knee and ankle. Wrist, interphalangeal joints, hip, knee and ankle joints and other parts of the disease, the most common application of artificial hip and knee joint replacement. The continuous improvement of artificial joint prosthesis design and material is the wisdom of biomechanics experts, materials engineers and orthopedic surgeons working together. Currently, most of the artificial joints are made of metal and highly cross-linked polyethylene materials. In recent years, ceramic materials have been widely used again because of their good hardness and resistance to wear and tear. Improvements in prostheses and surgical techniques have led to significant improvements in the success rate and longevity of artificial joint replacements. Diseases that require artificial joint replacement include osteoarthritis causing joint pain, limited movement and other dysfunctions; severe rheumatoid arthritis, aseptic necrosis of the femoral head, traumatic arthritis, certain hip fractures, benign and malignant tumors, ankylosing spondylitis, etc. Patients who choose surgery should pay attention to the following. Patients who choose surgical treatment should pay attention to the following issues: preparation of standard X-ray film of the joint, preferably in a hospital capable of joint replacement according to the requirements of film; moderate to severe persistent joint pain; long-term conservative treatment does not get substantial improvement. Conservative treatment includes: painkillers or non-steroidal anti-inflammatory drugs, physical therapy, walking aids (crutches), and a conscious effort to reduce physical activity that may cause joint discomfort. Optimal Age for Surgery In the past, it was believed that the optimal age for artificial joint replacement surgery was between 60-75 years of age. However, with improvements in artificial joint design and materials and improved surgical techniques, age is no longer an absolute contraindication to surgery, and many elderly, as well as many younger, patients have successfully undergone artificial joint replacement surgery with satisfactory clinical results. The greatest benefit of artificial joint surgery is that it eliminates joint pain, greatly improves joint function, and improves the patient’s quality of life. At present, more and more patients understand and are willing to accept artificial joint replacement surgery. However, patients are most concerned about how many years the artificial joint will last. The service life of artificial joints is mainly determined by two points, one is the wear and tear of the joints, and the other is the loosening of the prosthesis caused by the wear and tear particles. According to statistics, the artificial joints that were surgically inserted twenty years ago in developed countries are still intact and can continue to be used for more than 90% of the time, and the artificial joints that are currently used in the clinic have improved a lot compared to those used twenty years ago, and it is believed that the artificial joints that can continue to be used for more than twenty years after the replacement surgery should be more than 95% of the time.