The cost of an MRI of the knee joint is usually about$800 for one knee joint, which has a greater relationship with the local economy, the level of the hospital, and the type of equipment used for the examination, and the fluctuations are usually too great. The MRI of the knee is mainly to see if there is any obvious knee joint effusion, knee meniscus damage, as well as cruciate ligament damage and soft tissue tumors in the knee joint, which can also be shown more accurately by MRI. After the MRI, treatment is based on the results of the examination, for example, meniscal injuries can be treated conservatively in mild cases, while severe meniscal injuries need to be considered for arthroscopic treatment. In case of complete rupture of the cruciate ligament, arthroscopic reconstruction of the cruciate ligament needs to be considered.