Sutures are medical threads used to close wounds or surgical incisions, promoting healing and reducing the risk of infection. Made from various materials, including silk, nylon, or absorbable materials like Vicryl, sutures can be either absorbable (which dissolve over time) or non-absorbable (requiring removal after healing). They are typically applied with a needle and are designed to hold tissues together until natural healing occurs. Sutures come in different sizes and types depending on the wound's location and severity, and their careful placement is crucial for optimal healing and minimal scarring.