If a meniscus injury occurs, the first thing that can be done is a physical examination and imaging. Arthroscopy can be used for diagnosis and treatment at the same time. 1. Physical examination: including lift and grind test, Mack’s sign, meniscus squatting test, hyperflexion and hyperextension test. This kind of physical examination is very useful for the diagnosis of meniscus injury. 2. Imaging examination: including X-ray, magnetic resonance imaging (MRI), etc. X-ray examination can clarify the knee joint gap, determine whether there is a fracture around the knee joint, and also clarify whether there are degenerative changes, meniscal calcification and other conditions. MRI can show the internal structure of the meniscus and has high sensitivity in diagnosing meniscus injury. It is the most commonly used method to diagnose meniscus injury. 3. Other special examination: including arthroscopy, arthroscopy in the visualization of a clear diagnosis at the same time, can be carried out in the treatment of meniscus injury. At present, the main treatment for meniscus injury is arthroscopic treatment. If you suspect meniscus injury, please consult a doctor in time, improve the relevant examination, and avoid blindly using medication on your own.