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Mechanical properties of coated absorbable multifilament suture materials
Obstetrics and Gynecology
|May 1, 1986
Summary
Coated polyglactin 910 (Vicryl) and polyglycolic acid (Dexon) sutures showed similar mechanical properties. However, Vicryl demonstrated significantly greater in vivo tensile strength at 21 days, indicating superior strength for surgical applications.
Area of Science:
- Biomaterials Science
- Surgical Sutures
- Materials Engineering
Background:
- Coated polyglactin 910 (Vicryl) and coated polyglycolic acid (Dexon) are commonly used absorbable surgical sutures.
- Understanding their mechanical properties is crucial for surgical outcomes and material selection.
Purpose of the Study:
- To compare the mechanical properties of coated polyglactin 910 and coated polyglycolic acid sutures.
- To evaluate differences in surface morphology, tensile strength, knot security, and in vivo degradation.
Main Methods:
- Scanning electron microscopy (SEM) was used to assess surface morphology of 0 gauge sutures.
- Unknotted tensile strength was measured for gauges 1, 0, 00, and 000.
- Knot security was tested using a 2=1=1=1 configuration.
- In vivo tensile strength of 0 gauge sutures was evaluated at 21 days.
- Histologic evaluation was performed to assess tissue response.
Main Results:
- SEM revealed minimal surface aberrations on coated polyglycolic acid, with some differences noted compared to polyglactin 910.
- No statistically significant difference in unknotted tensile strength was found between the two materials across tested gauges.
- Both suture types achieved knot security with the specified configuration.
- Coated polyglactin 910 exhibited significantly higher in vivo tensile strength at 21 days compared to coated polyglycolic acid.
- Histologic evaluation showed no statistically significant difference in tissue response between the materials.
Conclusions:
- While both coated polyglactin 910 and polyglycolic acid sutures offer comparable unknotted tensile strength and knot security, polyglactin 910 demonstrates superior in vivo strength retention.
- These findings suggest polyglactin 910 may offer advantages in applications requiring sustained tensile support during the critical healing period.
- Further research could explore long-term degradation profiles and performance in diverse surgical settings.