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Synthetic sutures typically made of an isomer of linear propylene, a nonabsorbable (i.e., nonbiodegradable) polymer. These sutures are typically available in sterile monofilament uncoated-thread sections (e.g., 18 and 30 in [45 and 76 cm] long) attached to a single-use needle as an integral device; they are frequently colored for easy identification during surgery. Polypropylene nonabsorbable synthetic sutures keep their tensile strength for up to two years and are not absorbed by tissues; their intended use includes subcuticular closure, pull-out sutures, and suture of contaminated and/or infected wounds. The sutures usually have a smooth surface but some sutures are made of barbed threads. Nonabsorbable polypropylene barbed thread sutures are mainly used to suture without using knots (also known as knotless sutures); they can also be used for cosmetic procedures (e.g., face-lifting, cosmetic breast lifting).
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