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Related Experiment Videos

Cobalt-base alloys used in bone surgery.

A Marti1

  • 1Dr Robert Mathys Foundation, Bischmattstr. 12, CH-2544 Bettlach.

Injury
|March 29, 2001
PubMed
Summary
This summary is machine-generated.

Cobalt-base alloys offer excellent wear, corrosion, and heat resistance, making them ideal for dental and orthopedic surgical implants. Their biocompatibility and durability ensure long-term performance in demanding medical applications.

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Metallurgy

Background:

  • Cobalt-base alloys are known for their non-magnetic, wear, corrosion, and heat-resistant properties.
  • Key characteristics stem from cobalt's crystallography, solid-solution strengthening from chromium and molybdenum, hard carbides, and chromium's corrosion resistance.
  • Historically challenging to fabricate, specialized casting methods have expanded their use.

Purpose of the Study:

  • To review the properties and applications of cobalt-base alloys in medical implants.
  • To highlight their suitability for dental and orthopedic surgical applications.
  • To emphasize the material requirements for long-term implants.

Main Methods:

  • Literature review of cobalt-base alloy properties.

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  • Analysis of in vitro and in vivo test results for biocompatibility.
  • Examination of alloy applications in dental and orthopedic implants.

    • Main Results:

    • Cobalt-base alloys demonstrate excellent resistance to degradation in oral and bodily environments.
    • Biocompatibility and suitability for surgical implants confirmed through various tests.
    • Primary medical uses include dental implants, and orthopedic prostheses for knee, shoulder, and hip joints, as well as fracture fixation devices.

    Conclusions:

    • Cobalt-base alloys meet stringent requirements for biocompatibility and corrosion resistance in long-term surgical implants.
    • Their inherent properties make them highly suitable for demanding applications like joint endoprostheses.
    • Continued development in fabrication has enabled wider medical adoption.