A peripheral tear of the lateral meniscus is a common injury that occurs in the knee. The meniscus is a C-shaped piece of cartilage that acts as a cushion between the thigh bone (femur) and the shinbone (tibia). A peripheral tear occurs on the outer edge of the meniscus and can cause pain, swelling, and limited mobility.
Peripheral tears of the lateral meniscus can be caused by a variety of factors, including injury or trauma to the knee, degenerative changes due to aging, or repetitive stress on the knee from activities such as running or jumping. Symptoms can include pain, swelling, stiffness, and difficulty straightening or bending the knee.
If the tear is severe or does not respond to conservative treatment, surgery may be necessary. Arthroscopic surgery is a minimally invasive procedure that involves inserting a small camera and surgical instruments into the knee to repair or remove the damaged tissue.
Overall, peripheral tears of the lateral meniscus can be a painful and debilitating injury, but with proper treatment, most people can return to their normal activities within a few weeks to a few months.