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Materials characterization of explanted polypropylene hernia meshes.

C R Costello1, S L Bachman, B J Ramshaw

  • 1Department of Biological Engineering, University of Missouri-Columbia, Columbia, Missouri, USA.

Journal of Biomedical Materials Research. Part B, Applied Biomaterials
|February 8, 2007
PubMed
Summary

Polypropylene hernia mesh degradation may be caused by oxidation, leading to material changes and potential complications. This study investigated explanted meshes, confirming oxidation

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Area of Science:

  • Biomaterials Science
  • Surgical Innovation
  • Polymer Chemistry

Background:

  • Prosthetic mesh in hernia repair reduces recurrence but can cause complications.
  • Complications may stem from inflammatory responses or material degradation.
  • Mesh contraction and migration are potential adverse outcomes.

Purpose of the Study:

  • To investigate physiochemical changes in explanted polypropylene hernia meshes.
  • To compare explanted meshes with pristine materials.
  • To determine if oxidation contributes to mesh material degradation.

Main Methods:

  • Scanning electron microscopy (SEM) for surface morphology.
  • Differential scanning calorimetry (DSC) for thermal properties.
  • Thermogravimetric analysis (TGA) for mass loss.
  • Mechanical compliance testing.

Main Results:

  • Explanted polypropylene meshes showed evidence of degradation.
  • Observed changes included surface alterations and reduced compliance.
  • Results supported the hypothesis of oxidation-induced degradation.

Conclusions:

  • Oxidation is implicated in the degradation of polypropylene hernia mesh materials.
  • Understanding degradation mechanisms is crucial for improving mesh safety and efficacy.
  • Further research can guide the development of more stable surgical meshes.