Silk suture is indicated for use in general soft tissue approximation and/or ligation, including use in cardiovascular, ophthalmic, and neurological procedures. The use of this suture is contraindicated on patients with known sensitivities or allergies to silk
Non-absorbable sutures are used to provide longer-term tissue approximation. ... Nylon (Ethilon) and Prolene are both non-absorbable monofilament suture materials which provide good tensile strength with low tissue reactivity and are therefore widely used.
These stitches can take about six months to completely dissolve.