Sutures are classified according to their degradation properties. Sutures that undergo degradation and absorption in tissue are considered absorbable sutures. Sutures that generally maintain their tensile strength and are resistant to absorption are non-absorbable sutures.
Sutures are evaluated for the following:
- Uniform tensile strength and diameter
- High tensile strength securing the wound for a predictable amount of time
- Degree of pliability for knot security plus ease of handling
- Absence of impurities
- Assurance of sterility