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Status of surface modification techniques for artificial hip implants.

Subir Ghosh1, Sylvester Abanteriba1

  • 1School of Engineering, RMIT University , Melbourne , VIC , Australia.

Science and Technology of Advanced Materials
|February 24, 2017
PubMed
Summary
This summary is machine-generated.

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Surface modification techniques enhance artificial hip implants. Surface grafting shows the most promise, offering near-zero wear and reduced friction for improved implant longevity.

Area of Science:

  • Biomaterials Engineering
  • Orthopedic Surgery
  • Tribology

Background:

  • Artificial hip implants require enhanced tribological performance to improve longevity and patient outcomes.
  • Surface modification techniques significantly advance the biological, chemical, and mechanical properties of implant surfaces.
  • Key techniques include surface texturing, coating, and grafting to reduce friction and wear.

Purpose of the Study:

  • To review recent developments (last 10 years) in surface modification techniques for artificial hip implants.
  • To critically analyze the effects of these modifications on friction and wear.
  • To identify promising techniques for future research and development.

Main Methods:

  • A systematic literature review of 27 articles published in the last 10 years.
Keywords:
212 Surface and interfaces30 Bio-inspired and biomedical materials306 Thin film / CoatingsSurface modificationcoatinggraftinghip jointtexturing

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  • Categorization of reviewed articles based on surface modification technique (texturing, coating, grafting).
  • Critical analysis of reported friction and wear data for each technique.

    • Main Results:

    • Modified surfaces generally show reduced friction and enhanced wear resistance.
    • Surface texturing and coating exhibit noticeable wear rates, with issues like debris generation and delamination.
    • Surface grafting demonstrates significantly lower friction and near-zero wear rates.

    Conclusions:

    • Surface grafting techniques, creating phospholipid-like layers, offer superior tribological performance for hip implants.
    • Further research is needed to understand surface grafting's role in film formation and heat resistance under physiological conditions.
    • Optimizing surface grafting can lead to improved performance and longevity of artificial hip joints.