“How long will this artificial joint last me?” This is a question that almost every patient who needs a joint replacement will ask. But there is no way for doctors to give a definitive answer about this question. Studies have shown that 90% of artificial prostheses can last for more than 20 years, during which time the patient may need to dispose of the initial replacement artificial knee joint accordingly due to various reasons such as loosening, wear and tear, and infection. How long is the life span of artificial joints? According to the results of previous long-term follow-ups abroad, in general, the 10-year survival rate of the prosthesis after artificial knee replacement can reach more than 95%, and the 20-year survival rate of the prosthesis can reach more than 90%. In other words, most patients may use their artificial knee joints for a much longer period of time, with not a few patients having more than 30 years. Knowing that the artificial knee joint is only a few decades old and is still in the process of continuous improvement and enhancement, and that the average life expectancy of the average person is only 70 or 80 years, there is no need to get too hung up on the exact life expectancy of an artificial knee prosthesis. Factors affecting the life expectancy of the knee joint: Doctor: 1, the standardization of surgical operations. 2, the choice of prosthesis before surgery. 3, postoperative rehabilitation guidance for patients. Artificial prosthesis: the design, material and manufacturing process of the prosthesis. There are many joint replacement prosthesis materials, and generally people will make a simple distinction based on domestic and imported. Of course, not imported, expensive is the best, but according to the actual situation of each patient, the demand for the right choice of prosthesis. At present, the common knee joint prosthesis is mainly divided into: 1, metal – ordinary plastic spacer – metal: mechanical test 15-25 years or so. 2.Metal – highly cross-linked spacer – metal: mechanical test about 20-40 years. 3, ceramic surface – ordinary plastic gasket – metal: mechanical test 20-40 years or so. 4, ceramic surface – high crosslinking gasket – metal: mechanical test 40-50 years or so. Patient’s own factors: 1. Any history of joint infection. 2.With or without other diseases, such as dental disorders, hypertension, diabetes, vascular diseases. 3, The quality of local bone and soft tissue in the joint, such as bone defects, skin scars. In patients with osteoporosis, the risk of loosening and wear of the prosthesis may be correspondingly higher. 4, the patient’s use of the new joint, age, weight, etc.. Excessive weight, excessive activity, squatting, climbing stairs, etc., may accelerate the wear and loosening of the artificial joint. Can a broken artificial joint be replaced? A loose, painful artificial knee joint can often be fixed using revision surgery, but the results of another operation may not be as good as an initial knee replacement, and the risk of complications may be relatively higher and often more expensive. However, if the loosening and failure of the prosthesis is determined and a more appropriate prosthesis is selected on an individual basis, a better mid- to long-term result can still be achieved with revision surgery. Currently, arthroplasty is a very mature surgical method, known as the most cost-effective surgery in the 20th century, and it is also recommended that the majority of patients should not be too obsessed with the life expectancy of the joint prosthesis, and should follow the doctor’s instructions to protect their “new joints” and maintain them on a regular basis in the hope that they can be “used for a long time”. The end of the life of a joint prosthesis is the most cost-effective surgery.