Posterior horn meniscus injury can be treated conservatively or surgically according to the degree of injury. 1. Posterior meniscus horn injury, if it is one degree or two degrees of injury, the main conservative treatment, first of all, to avoid strenuous exercise to reduce the knee flexion and extension, can be under the guidance of the doctor to apply nutritional cartilage medication, such as glucosamine sulfate capsule, but also can be injected into the joints to promote the healing of the meniscus sodium vitrate. 2. Surgical treatment is mostly used for meniscal tear for third degree injury. Surgery for the meniscus can not be sutured, you can take meniscus repair surgery, if the tear is not serious can be performed meniscus suture, full recovery at least three months time. Therefore, the posterior horn of the meniscus injury should be selected according to the degree of meniscus injury treatment.