A torn meniscus can be painful to experience, causing the knee to swell and even give way while a patient is walking. As an important piece of the knee’s function, the meniscus is a crescent-shaped piece of cartilage that enables easy movement and reduced friction on the knee bones. While some meniscal tears can be treated without surgery, it depends entirely on the location and severity of the tear. Often caused by a sports injury or weakened cartilage, a meniscal tear is surgically treated by stitching together the torn pieces. As a minimally invasive technique, surgeons perform arthroscopic knee surgery to assess and stitch back together the meniscus or remove any injured or unhealthy tissue. An arthroscopic meniscal repair is one of the most common procedures performed in orthopaedics.