The knee joint is very active in life, so if you don’t take care of it, it can easily become sprained or injured, which can lead to damage to the meniscus, an important tissue in the knee joint. Injuries to the meniscus can cause a lot of problems for patients, so it is important to treat them promptly. This article will explain in detail the diagnostic basis of meniscus injury and its treatment principles. The diagnosis of meniscus injury is based on: (1) Medical history: Patients with meniscus injury generally have a history of trauma. (2) Symptoms: meniscal injury patients generally have pain in the knee joint, limited knee movement, knee instability, and some patients also have a sense of “interlocking”. (3) Pressure pain: Meniscal injury patients will have fluid or blood accumulation in the knee joint, and a popping sound will occur. (4) Combined with clinical examination: meniscal injury should be diagnosed in detail by imaging, such as arthrography, CT examination, and arthroscopy plays a very important role in the diagnosis of meniscal injury. Meniscal injury treatment principles: (1) acute injury to the knee joint can induce the appearance of meniscal injury, patients must be correctly treated after acute injury. The treatment method is: ice the affected limb to stop bleeding, braking, and then actively go to the hospital to choose the appropriate treatment. (2) Minor meniscus injury patients can use conservative therapy, which is more commonly used conservative therapy is drug therapy, drug therapy in the external application for minor patients have a certain degree of effectiveness. Manipulation is also a common conservative treatment for this disease. Manipulation is done by rotating the lower leg internally and externally, which can release the symptoms of knee interlocking. Conservative treatment of meniscal injury generally refers to patients in the early stages, if the patient uses conservative treatment is not effective, other treatments must be carried out, of which minimally invasive technology – German arthroscopic technology is the best choice for patients. (3) Patients with non-early meniscus injury or those who are not effective with conservative treatment can benefit from the German arthroscopic technique, which is an arthroscopic repair of the meniscus and cleaning of the diseased meniscus, and can help patients get rid of a series of diseases. In addition, German arthroscopic technology can treat not only meniscal injuries but also other joint diseases, and is widely used in the treatment of joint diseases in the shoulder, elbow, knee, hip and ankle joints, etc. It is well accepted by patients. The diagnosis of meniscus injury and the treatment principles of meniscus injury are explained here, I believe it will help you to understand the disease of meniscus injury. Once the knee joint discomfort occurs, we must actively go to the hospital for detailed diagnosis and treatment to avoid the disease from becoming more serious and endangering the health of patients.