Sutures are medical devices used to close wounds or surgical incisions. They consist of a length of thread or material that is threaded through the skin and tied to hold the edges of the wound together. Sutures can be made from various materials, including silk, nylon, or absorbable materials that dissolve over time. The process of placing sutures is called suturing, and it helps promote healing by keeping tissues in close proximity. Proper suturing techniques are essential to minimize scarring and reduce the risk of infection. After a certain period, sutures may need to be removed by a healthcare professional, depending on the type used.