The meniscus is a crescent-shaped piece of cartilage in the knee that acts as a cushion between the thighbone and shinbone. The meniscus has two parts, the medial meniscus, and the lateral meniscus. The lateral meniscus is located on the outer side of the knee and is more prone to injury than the medial meniscus. One of the common injuries to the lateral meniscus is a derangement of the posterior horn due to an old tear or injury.
The posterior horn is the back part of the lateral meniscus that is attached to the back of the knee joint. When the posterior horn is deranged, it can cause pain, swelling, and stiffness in the knee. The pain may be felt in the back of the knee or on the outer side of the knee. The knee may also feel unstable, and there may be a sensation of clicking or popping when it is moved.
Derangement of the posterior horn of the lateral meniscus is usually caused by an old tear or injury. The meniscus can tear due to a sudden twisting or turning motion of the knee, which is common in sports that involve jumping, pivoting, or sudden stops and starts. In older adults, the meniscus can tear due to degeneration of the cartilage.
Treatment for derangement of the posterior horn of the lateral meniscus depends on the severity of the injury. Rest, ice, compression, and elevation (RICE) can help reduce pain and swelling. Physical therapy can help improve range of motion and strengthen the muscles around the knee. In severe cases, surgery may be necessary to repair or remove the damaged meniscus.
If you experience pain, swelling, or stiffness in your knee, it is important to seek medical attention. Your doctor can perform a physical exam and imaging tests, such as an MRI, to diagnose derangement of the posterior horn of the lateral meniscus. Early diagnosis and treatment can help prevent further damage and improve the chances of a full recovery.
In conclusion, derangement of the posterior horn of the lateral meniscus due to an old tear or injury can cause pain, swelling, and stiffness in the knee. Treatment depends on the severity of