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Contamination by metallic elements released from joint prostheses.

E Chassot1, J L Irigaray, S Terver

  • 1Laboratoire de Physique Corpusculaire de Clermont-Ferrand, CNRS-IN2P3, Université Blaise Pascal, F-63177 Aubière Cedex, France. chassot@clermont.in2p3.fr

Medical Engineering & Physics
|February 27, 2004
PubMed
Summary
This summary is machine-generated.

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Metallic implants can corrode, releasing debris into surrounding tissues. This study quantifies metallic element contamination and migration in human tissues near implants, revealing heterogeneous distribution patterns.

Area of Science:

  • Biomaterials Science
  • Medical Physics
  • Toxicology

Background:

  • Metallic implants in contact with human tissues initiate a biological reaction, leading to corrosion and the release of metallic debris and wear particles.
  • Understanding the extent and patterns of metallic element contamination and migration in surrounding tissues is crucial for assessing implant safety and patient outcomes.

Purpose of the Study:

  • To quantify the contamination and migration of metallic elements released from implants into adjacent human tissues.
  • To investigate the distribution gradients and degree of contamination in tissues surrounding metallic prostheses.

Main Methods:

  • Analysis of post-mortem tissue samples surrounding prostheses to determine contamination gradients.
  • Examination of periprosthetic capsular tissues from pathological joints under surgical conditions to assess contamination levels.

Related Experiment Videos

  • Utilized a Van de Graaff accelerator at CERI (Centre d'Etude et de Recherche par Irradiation) for elemental concentration measurements.

    • Main Results:

    • Elemental concentrations were measured on the surface of tissue samples.
    • Contamination by metallic elements was found to be highly heterogeneous, varying significantly with pathology and sampling location.
    • Metallic elements were detected in both particulate and ionic forms, indicating potential for migration.

    Conclusions:

    • The study demonstrates significant and heterogeneous metallic contamination in tissues surrounding implants.
    • Metallic elements can migrate through soft tissues via various mechanisms, influenced by pathology and implant type.
    • These findings highlight the importance of considering tissue contamination and element migration in the context of metallic implant performance and biocompatibility.