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Related Experiment Videos

Adhesion performance of UHMWPE after different surface modification techniques.

R Oosterom1, T J Ahmed, J A Poulis

  • 1Production Technology, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands. r.oosterom@lr.tudelft.nl

Medical Engineering & Physics
|August 25, 2005
PubMed
Summary
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Surface treatments like corona and glow discharge significantly improve ultra-high molecular weight polyethylene (UHMWPE) adhesion to bone cement. A combined roughening and glow discharge treatment proved most effective for UHMWPE component design.

Area of Science:

  • Biomaterials Science
  • Surface Engineering
  • Orthopedic Implants

Background:

  • Ultra-high molecular weight polyethylene (UHMWPE) is crucial for glenoid components in joint replacements.
  • Poor adhesion of UHMWPE to bone cement (PMMA) hinders implant design.
  • Surface modification is essential to enhance UHMWPE's bonding capabilities.

Purpose of the Study:

  • To investigate the effectiveness of various surface treatments on UHMWPE adhesion to PMMA bone cement.
  • To evaluate gas-phase techniques (UV/Ozone, corona, glow discharge) and abrasion for UHMWPE surface modification.
  • To assess the impact of aging on the adhesion of treated UHMWPE samples.

Main Methods:

  • Surface treatments: UV/Ozone, corona discharge, radio frequency glow discharge plasma, and abrasion.

Related Experiment Videos

  • Surface characterization: Water contact angle, surface energy, and roughness measurements.
  • Adhesion testing: Single lap-joint shear testing with PMMA bone cement and MMA adhesive.

    • Main Results:

    • Corona and glow discharge treatments rapidly increased surface energy (>100%) and shear stress (0.12 to 0.40 MPa).
    • UV/Ozone treatment required longer exposure times with less significant improvements.
    • Combined roughening (10s) and glow discharge (90s) yielded the strongest adhesion, causing UHMWPE material failure.

    Conclusions:

    • Gas-phase treatments, particularly corona and glow discharge, effectively enhance UHMWPE adhesion for implant applications.
    • Optimized surface modification is critical for the viability of UHMWPE-based glenoid component designs.
    • Combined surface roughening and glow discharge treatment offers a promising approach for superior UHMWPE-PMMA bonding.