Meniscus grafts usually last 7 to 10 years, and may last longer or shorter depending on how the meniscus is used and how well it is cared for on a daily basis. Meniscus transplantation is mainly used to help rebuild the function of the knee joint in patients who have complete destruction of the meniscus, which cannot be repaired, or in patients who have had the meniscus removed. If the meniscus is of good quality and has good elasticity and thickness, it can usually last longer, but if there is a strong immune response after transplantation, it will be used for a shorter period of time. After meniscus transplantation, the life span of the meniscus may be shortened if the knee is traumatized or overly active. It would be beneficial to take care of the knee to minimize the load on the knee and to facilitate the subsequent use of the meniscus. After meniscus transplantation, it is recommended to take good care of your knee and avoid overuse of the knee joint. Generally, it can be used for 7 to 10 years, or even more than 15 years, and the exact duration varies from person to person.