Pronunciation: /əbˈzɔːbəb(ə)l ˈsuːtʃə/ · Part of speech: noun · Also called: dissolvable stitches · Field: surgery

Definition. An absorbable suture is a surgical stitch (suture) that will eventually be absorbed, or broken down, by the body and therefore does not need to be removed. In everyday language these are often called dissolvable stitches. They are used to hold tissues together while healing takes place, and then disappear on their own.

How they work. Once placed, an absorbable suture holds the wound edges together during the early, critical phase of healing. Over time, the body breaks the material down — through processes such as enzyme activity or gradual chemical breakdown (hydrolysis) — until the suture is dissolved and reabsorbed. The rate at which this happens varies by material: some retain their strength for only days, others for weeks or months, allowing the surgeon to match the suture to how long the tissue needs support.

Where they are used. Because they do not need removal, absorbable sutures are especially useful for:

• Deep or internal tissues that cannot easily be reached again, such as stitches inside the body during an operation.
• Sites where removal would be difficult or distressing, including some procedures in children or in the mouth.
• Layers beneath the skin, where they support healing out of sight.

Materials. Absorbable sutures may be made from natural materials (historically, treated animal tissue such as “catgut”) or, more commonly today, from synthetic polymers designed to break down predictably and to cause less tissue reaction.

Clinical relevance. The choice between absorbable and non-absorbable sutures depends on the type of tissue, how long support is needed, the risk of infection, and cosmetic considerations. An advantage of absorbable sutures is that they spare the patient a return visit for removal; a consideration is that the surgeon must select a material whose breakdown time matches the healing required, since premature loss of strength could allow the wound to reopen.

Distinction from related terms. A non-absorbable suture is made from material the body does not break down (such as silk or nylon) and must be removed after healing, or is left permanently in deep tissues. Ligature is a thread used to tie off a structure such as a blood vessel. Staples and adhesive strips are alternative methods of closing wounds. An absorbable suture is specifically one that the body dissolves and reabsorbs over time.

Etymology. Absorbable from Latin absorbere, “to swallow up” (here, the body takes up the material); suture from Latin sutura, “a seam” or “a sewing together,” from suere, “to sew.”

⚠️ Disclaimer: This explanation is provided for general educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional regarding any clinical questions.