It is not accurate to say that you cannot do physical work for the rest of your life with a meniscus injury. After a meniscus injury, it can be divided into different degrees of injury from I-III. Grade I and Grade II injuries are usually mild meniscal injuries that can be treated conservatively to allow for physical activity. Conservative treatment usually involves resting the knee joint, avoiding weight bearing, and increasing the strength and intensity of the muscles around the knee. The muscles that need to be exercised include the quadriceps and triceps, which restores the stability of the knee joint and promotes meniscal repair, allowing for normal physical activity once meniscal function is restored. A third-degree meniscal injury is usually called a meniscal tear and can be treated with arthroscopic surgery. If the conditions for suturing are met, meniscal sutures can be used to restore the flatness and function of the meniscus, and physical work can also be performed. If the conditions for meniscal suture are not met, meniscal revision can be performed, but the patient cannot perform physical labor after surgery. The reason for this is mainly due to the lack of integrity of the meniscus after revision, and the stability of the knee joint will be significantly reduced. Even with strength training such as quadriceps, there is no guarantee that knee stability will return to pre-injury levels, so physical work should be avoided.