Most sprains of the knee are caused by trauma, resulting in localized pain, swelling, and limited movement around the knee joint, which may lead to damage to the meniscus, as well as damage to the articular cartilage and cruciate ligaments. If there is no improvement in pain, swelling, and limitation of movement within a short period of time, you need to go to a regular hospital to have an MRI of the knee joint and to determine the severity of the disease based on the MRI results and physical examination. If the symptoms are mild and the injury is relatively minor, conservative treatment may be chosen. If there is a rupture of the cruciate ligament or a tear of the meniscus, the situation is more serious and seriously affects normal work and life, if there are indications for surgery, active surgical treatment may be required to completely allow the knee injury to be effectively treated.