Degeneration of the posterior horn of the medial meniscus of the knee joint is usually a descriptive language given by the imaging physician when doing an MRI of the knee joint, and this condition is usually seen for the following reasons:1. The most common trauma leads to knee injuries, which in turn leads to medial meniscus injuries. If the posterior horn of the medial meniscus is damaged, or degeneration, it will lead to extreme knee flexion, induced medial knee pain, or hand pressure, the medial side of the knee can also be induced by severe pain, in the up and down the stairs when the pain is more pronounced. 2, degenerative osteoarthropathy of the knee joint. For example, after the degeneration of cartilage, meniscus local damage, or inflammatory reaction, can also appear meniscus posterior horn degeneration. Clinical treatment is mainly based on drug therapy, the use of non-steroidal anti-inflammatory and analgesic drugs, with the promotion of cartilage repair, or nutritive cartilage drugs, such as aminoglucose hydrochloride tablets, or aminoglucose sulfate tablets.