Suture Tensile Strength
Suture tensile strength is the maximum longitudinal force per unit area (or maximum force) that the suture can withstand before breaking under controlled testing conditions.
Determinants of Tensile Strength
Suture tensile strength varies by:
- Suture material (for example, nylon, polypropylene, polyester, polyglycolic acid, polydioxanone).
- Suture size and diameter (for example, USP size and metric diameter).
- Needle type and attachment method (may affect the measured effective strength at the needle swage).
- Manufacture and finishing (including twist vs monofilament construction).
How Tensile Strength Is Typically Specified
Tensile strength is typically provided by the manufacturer as a standardized breaking strength value measured under defined test conditions, and it is commonly referenced using regulatory/standard frameworks used for suture performance testing (for example, USP-related breaking strength specifications).
Value Lookup for Clinical Use
The tensile strength for a specific suture cannot be stated without the product’s exact identification (material and size). The tensile strength value should be obtained from the package insert or manufacturer technical documentation for the specific suture SKU.
Clinical Implication
Selection of suture strength should be based on the required mechanical demands of the tissue being approximated rather than a single generic tensile-strength number across all sutures.