Knee meniscus replacement usually involves the use of artificial prosthetic materials to replace the damaged knee meniscus tissues so as to relieve joint pain and improve joint function. Usually degenerative knee osteoarthritis, rheumatoid arthritis, osteoarthritis, meniscus injury and other factors may cause damage to the meniscus of the knee joint, which needs to be replaced in order to improve the function of the knee joint. In clinical practice, an artificial prosthesis is usually used to replace the knee meniscus tissue that has been damaged. Usually, a preoperative examination is performed before the surgery to rule out any contraindications to surgery before replacement. The procedure begins with epidural or general anesthesia, followed by a supine position. After the anesthesia takes effect, a longitudinal incision is made in the middle of the knee, and then the damaged meniscus tissue is taken out and put into the meniscus tissue made of artificial prosthesis material, and finally the surgery is finished with suture, but local care should be paid attention to after the surgery. If the meniscus of the knee joint is damaged and needs to be replaced, it is recommended to consult the doctor in time and decide the surgical plan after the doctor’s comprehensive evaluation of the condition.