Whether a second degree meniscus injury can be repaired normally depends on the site of the injury, the red zone and the red-white junction zone can be repaired, and the white zone is usually not repairable. 1. Second-degree meniscus injury means that there is a linear high signal shadow in the meniscus, but it does not involve the edge of the meniscus. Injuries located in the red zone of the meniscus are rich in blood flow and can be repaired by conservative or suture treatment after injury. The red-white junction area has a slightly poorer blood supply and can usually be repaired as well. Located in the white zone, there is no obvious blood supply, relying on intra-articular joint fluid nutrition, generally can not be repaired. 2. Meniscus injury is often accompanied by knee cruciate ligament and lateral collateral ligament injury, so that the knee joint due to the lack of fixation and abnormal lateral loosening phenomenon, this lateral loosening will be in the movement of a lateral shear force, resulting in meniscus injury, a continuous vicious circle, resulting in meniscus is not easy to repair, so the treatment requires local braking. Second degree meniscus injury, need to actively consult the doctor, physician guidance under the treatment.