Meniscus medial posterior horn injury second degree is not very serious, generally do not need surgery, you can first conservative treatment. Meniscus medial posterior horn injury of the second degree may be due to prolonged weight bearing, trauma and other reasons, mostly suggesting that the meniscus rupture but does not involve the articular surface, is not very serious, generally do not need surgical treatment, you can first conservative treatment. Sodium vitrate injection can be injected into the knee joint cavity to lubricate the joint, use of nutritive cartilage drugs, such as glucosamine sulfate to nourish the cartilage, if the pain is more obvious, non-steroidal anti-inflammatory drugs can be used, such as diclofenac sodium extended-release tablets for anti-inflammation and pain relief. After the examination found that the meniscus medial posterior horn damage second degree, it is recommended that under the guidance of the doctor, combined with their own situation, targeted treatment.