Many athletes have meniscus injuries, and most can return to normal or even return to competition if the injury is treated properly. Whether the meniscus injury will affect the future function of the leg, mainly related to the degree of injury and whether the treatment is standardized. First of all, the lighter meniscus injuries, most of which are caused by inadvertent sprains during sports, may only be painful, the knee joint can be moved, and after proper rest and braking, it can generally be recovered in a short period of time without serious effects, not to mention leading to disability. Secondly, in moderate meniscal injuries, the patient may experience pain, swelling, and popping of the knee joint, and the pain is aggravated when the knee joint is active, accompanied by a certain degree of activity restriction, which can be cured by timely rest and braking, together with physical therapy and oral anti-inflammatory and analgesic drugs, and will not affect the activities of the knee joint. Lastly, severe meniscal injuries are usually accompanied by knee ligament injuries, such as medial collateral ligament, lateral collateral ligament or cruciate ligament. Patients with severe pain, accompanied by swelling of the knee joint and limited movement usually require surgery. The meniscus is a half-moon shaped cartilage that lies within the knee joint. If the integrity and continuity of the meniscus is disrupted in cases such as trauma, a series of symptoms may occur, such as acute sprains of the knee joint and meniscal tears due to joint instability. Alternatively, meniscal damage may occur as a result of chronic strain on the knee joint or abnormal development itself. Therefore, you should usually pay attention to the protection of the knee joint and meniscus, pay attention to warming up before activities, strengthen the leg muscles, and avoid frequent stair climbing, etc.