2008 WBC Conference Poster: Wear Assessment of Self-Mating PEEK Disc Arthroplasty

    • Reference:
    • Brown T et al. A Comprehensive wear assessment of self-mating PEEK-OPTIMA for disc arthroplasty applications. Transactions of the 8th World Biomaterials Congress, Poster P-Sat-K-661, 2008.
    • Keywords:
    • PEEK, wear, spine, 2008 WBC
    • Permissions:
    • The PDF of the conference poster is made available on with the permission of the authors.

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The purpose of this study was to provide a comprehensive wear assessment of self mating PEEK-OPTIMA (PEEK) for use in lumbar disc arthroplasty applications under different motion profiles, test frequencies and environmental conditions. Testing of PEEK-on-PEEK disc arthroplasties was performed on a six-station spine wear simulator. The test fluid was newborn calf serum, phosphate buffered saline and 20mM of EDTA with a final protein content of 20 g/l. The loading and motion patterns during the test were modified from ISO 18192-1. The results suggest that self-mating PEEK does not undergo orientation softening at the wear surface. The long term wear properties of self-mating PEEK were found to be relatively low.