What Is Suture? Definition, Uses, and Types Explained

A suture is a medical device used to hold body tissues together after an injury or surgical procedure. Sutures play a crucial role in wound closure, helping wounds heal properly while reducing the risk of infection and scarring. In simple terms, a suture is a specially designed surgical thread combined with a needle to close cuts, incisions, or surgical openings.

Sutures are used in hospitals, clinics, and emergency care for both minor and major procedures. Depending on the healing needs, sutures may be absorbable or non-absorbable. Absorbable sutures dissolve naturally inside the body over time and are commonly used for internal tissues. Non-absorbable sutures do not dissolve and may need to be removed once healing is complete.

Sutures also vary by structure and material. Monofilament sutures are made of a single strand and reduce infection risk, while multifilament sutures consist of multiple fibers that provide better knot security. Common suture materials include silk, nylon, polypropylene, and synthetic polymers.

Understanding what a suture is and how it works helps patients and healthcare professionals choose the right wound-closure method for safe healing and optimal outcomes.