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Related Experiment Videos

Preclinical Evaluation of Mesh Implants: The Pathologist's Perspective.

John H Keating1, Raffaele Melidone1, Fernando Garcia-Polite1

  • 11 CBSET, Inc., Lexington, Massachusetts, USA.

Toxicologic Pathology
|November 22, 2018
PubMed
Summary

Evaluating mesh implants in animal models requires detailed pathologic assessment. This review outlines histologic parameters and morphometric analyses crucial for determining host responses and ensuring the safety of surgical mesh devices.

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Area of Science:

  • Biomaterials Science
  • Veterinary Pathology
  • Surgical Device Evaluation

Background:

  • Surgical mesh implant use is increasing across various applications.
  • Evolving mesh designs necessitate standardized pathologic evaluation for safety and host response assessment.

Purpose of the Study:

  • To review essential components for evaluating mesh implants in preclinical animal models.
  • To emphasize histologic parameters, scoring matrices, and morphometric analyses for mesh implant assessment.

Main Methods:

  • Necropsy assessment focusing on implant persistence, architecture, and host responses (exudation, adhesions).
  • Microscopic evaluation of bioresorption, tissue ingrowth, neovascularization, and inflammation.
  • Consideration of mesh composition (biologic, synthetic, coatings) and architecture for appropriate processing (paraffin/resin embedding) and staining.
Keywords:
animal modelsfibrosisherniainflammationmeshperitoneum

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Main Results:

  • Histologic and morphometric analyses provide critical data on mesh implant performance.
  • Semiquantitative scoring matrices aid in consistent evaluation of host responses.
  • Tailored evaluation methods are necessary due to diverse mesh compositions and architectures.

Conclusions:

  • Consistent and detailed pathologic evaluation is vital for assessing mesh implant safety and host interactions.
  • Understanding mesh composition and anticipated tissue responses guides the selection of appropriate evaluation techniques.
  • This review provides a framework for robust preclinical assessment of mesh devices.