A suture is a medical device used to close wounds or surgical incisions. It consists of a strand of material, often made from silk, nylon, or absorbable substances, that is threaded through the skin to hold the edges of the wound together. Sutures help promote healing and reduce the risk of infection. There are different types of sutures, including interrupted sutures, which are individual stitches, and continuous sutures, which are a single strand that runs along the wound. The choice of suture depends on the location and type of injury, as well as the desired cosmetic outcome.