A good meniscus can play an important role in protecting knee cartilage and maintaining knee motion; however, if the meniscus is damaged, it is like a rusted or broken ball in a bearing, and the torn pieces can cause wear and tear of the articular cartilage and aggravate cartilage damage. In some patients, the abnormal position of the meniscus tear can lead to limited extension or flexion of the knee joint, which can only be restored by surgical correction of the tear or removal of the tear. Therefore, for meniscal tears, nothing is better than nothing. The location of the torn flap and whether it can be sutured can be initially determined by MRI. 2, Generally speaking, conservative treatment is not recommended for meniscal injuries, for the reasons stated above. There are some patients who can try: 1, the symptoms are not heavy, only a slight pain patients. Such patients are generally more stable at the meniscus tear, the tear does not exceed 1cm, will not be stuck in the joint cartilage, and the tear flap will not be displaced in daily life. However, this conservative treatment is at the cost of giving up the normal knee movement function, that is, the patient can not carry out normal sports, can only maintain daily life, and if there is a sprain or walking emergencies, etc., the original injury may aggravate, have to consider receiving surgery, and then the chances of surgery meniscus suture is not great. 2, older patients, whose tears are generally degenerative, such The patient’s cartilage has generally worn very badly, and meniscus surgery is not significant for cartilage, and topical medication or oral painkillers can be used. For patients with severe symptoms or interlocking, arthroscopic surgery can be considered, and those with severe cartilage degeneration should undergo joint replacement surgery. 3, therefore, non-elderly patients, meniscus injury once diagnosed, that is, as soon as possible surgical treatment. Arthroscopic meniscus surgery can be divided into 3 categories: total excision, partial excision and meniscus suture (i.e. meniscus repair surgery). The first two techniques are closely related to the duration of the meniscus injury. The longer the meniscus injury, the more severe the injury may be, and the greater the likelihood of total excision; if surgery is performed as soon as possible, generally only the torn flap can be removed, and the remaining good meniscal tissue can be preserved to be able to perform some or even all of the meniscus functions. Meniscal suture surgery is indicated for fresher longitudinal tears, which is a poorly understood medical anatomical term and generally requires an arthroscopic determination. In short, the sooner arthroscopic surgery is performed on non-elderly patients with meniscus injuries, the better! 4. Arthroscopic meniscus surgery has advantages! First, it is minimally invasive, the surgery only requires 2 0, 5cm eyes. Second, the postoperative recovery is fast, as long as the cartilage condition is good, non-sutured patients can return to the amount of movement required for daily life in 2-3 weeks after surgery. In addition, it should be noted that the general cost of arthroscopic meniscus surgery is usually around 6000, and you can take medical insurance. The hospital stay is 3-5 days. 5. Theoretically, the removal of most or all of the meniscus can trigger premature degeneration of the knee joint. However, a broken meniscus left in the joint can cause far more serious problems than no meniscus at all (imagine a bearing without a steel ball in it running and a running bearing with a broken steel ball in it). In reality, the degeneration of the knee joint after meniscectomy is not as severe as the theory suggests, and many athletes who have had their meniscus removed not only return to competition, but regain their gold medals! After meniscectomy, it is especially important to strengthen the knee musculature to restore function and protect the knee cartilage, which is fully explained and emphasized in the rehabilitation program and can be followed by the patient concerned after surgery.