Patients often ask, “How many years can I have an artificial joint replacement? For this question, I think there are three factors, just like we build a house, which are any material, how the builder mason, and the user of the house. Joint replacement also has a material problem that is the prosthetic factor, the builder that is the doctor factor, and the user that is the patient factor: 1, the material is also the joint prosthesis factor, including the design of the joint prosthesis factors, now is not what the new joint is good, there are many joints after time to test the body loosening or other problems, many manufacturers have many joints listed a few years after the withdrawal for various reasons, such as metal to metal Large head and so on. In addition, the material factor is also very important, with technological advances in the joint and the previous joints now have a very big leap, for example, now generally use high cross-linked polyethylene acetabular lining, reducing polyethylene debris, reducing the dissolution of the bone. The fourth generation ceramic to ceramic joints, the use of metal tantalum in the acetabulum and femoral side of the bone trabeculae are now being used. The use of black crystal femoral heads, etc. are all reducing friction and making the prosthesis and bone fixation stronger. There is also the increased use of large head technology, which allows for a greater range of motion in the joint and makes it less likely to dislocate. Better quality of life. Choose a good prosthesis is a necessary condition for a long time application. 2, the doctor factor including the surgeon’s own technical factors, there is no denying that a doctor who has completed several hundred cases of joint surgery a year has the advantage of experience and skill than a doctor who has completed 10 or 20 cases a year. For example, the same acetabular prosthesis is implanted at the most important angle of abduction and tilting forward, and the angle of implantation may be different for each person. Like building a house, if the mason makes the wall crooked, the best bricks are useless. In addition, this includes the technique applied by the surgeon, such as the application of cemented and non-cemented fixation techniques, and if cemented techniques are applied, the generation of cemented techniques, and so on. So the doctor factor is also a very important factor, choose a mastery of advanced concepts and surgical skills of skilled doctors is an important guarantee of your good postoperative results. 3, patient factors including the patient’s systemic factors, such as the original disease of joint replacement, whether it is rheumatoid arthritis, ankylosing spondylitis and other chronic diseases, these diseases and other normal life of the joint use than the short. In addition, the amount of joint activity after surgery is also a major factor. A person’s activity is about 5-10km a day, but you have to run 20 or 30km a day after the replacement, so the wear and tear of the joints will be large and affect the service life. So if you are overweight, have rheumatoid arthritis, ankylosing spondylitis, osteoporosis, excessive post-operative activity, etc., these factors will affect the life of your joints. Therefore, the life expectancy of a joint replacement is a combination of these factors, provided that there is no infection in the first place. If we build a house with good, new construction materials, good masons, and careful users, then our house will last a long time. Similarly, if we apply the more mature joint prosthesis and modern technology, by the mastery of advanced concepts and surgical skills, more skilled doctors copy knife surgery, post-operative patients pay attention to the use, no special diseases, then the joint life of the article and the doctor said 25 years or more should be able to achieve.