A. Many people have had meniscus injuries for three or five years, or even 10 or 20 years, and they don’t start out serious, but as they get older, their knee joints become less and less strong, or swell and hurt when they exercise. This question can be divided into two parts: 1. “Many people have had meniscus injuries for three or five years, or even 10 or 20 years, and they did not start out serious”. I have already answered this part in article 1, but if the disease does have a duration of 10-20 years, it is generally considered that the previous meniscus injury is a degree I or II injury, and according to the Chinese And according to the history of joint surgery and imaging development in China, MRI was not common in China 10-20 years ago, so maybe the diagnosis of meniscus injury is just a doctor’s judgment based on clinical experience, not necessarily really a meniscus injury. 2, “With the growth of age, the knee joint is becoming less and less strong, or when exercising, it will be swollen and painful”, this description should not be the symptoms of meniscus injury, the symptoms of meniscus injury I have described in detail in the article a, this symptom is mostly the performance of osteoarthritis of the knee joint, no A lot of strength is caused by the weakening of muscle strength and physical exercise as we age, but of course old meniscus injuries are often accompanied by some degree of muscle atrophy, especially the medial femoral muscle (specific parts of which you can check Baidu), and once swelling and pain occur, it is often a sign of an acute attack of osteoarthritis. Then there are many reasons for the osteoarthritis described here, and it is certainly possible that it is related to meniscal damage (as explained in specific article one). This is the reason why we recommend early treatment of meniscal rupture. Second, for old meniscus injuries, do they need surgery or conservative treatment? This question has been explained in detail in article 1. In general: for young people, you can try conservative treatment if it is a meniscus injury, but if the meniscus is ruptured, surgery is recommended. For older people with osteoarthritis, it depends on whether your clinical symptoms are based on meniscal problems or osteoarthritis. Third, if not treated surgically, will the old injury get worse? The answer is the same as above. For young people, if the meniscus is ruptured, most of them will get worse without surgery, and early osteoarthritis will be induced. For older people with osteoarthritis, it depends on whether your clinical symptoms are mainly meniscal or osteoarthritic. If the degree of osteoarthritis is already severe and you have reached the indication for joint replacement, surgery is not recommended for the meniscus alone.