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stick fretting between Ti alloy and PMMA

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  • stick fretting between Ti alloy and PMMA

    In some tests we measured a relative motion between an implant and its
    cement mantle on about 60 microns. We feel that this is probably a stick
    regime, where the displacement is completely accomodated by elastic
    deformation of PMMA ridges. If this is true, no or minimal damage would be
    expected.

    Now my boss want (for yesteday) a reference in support of this speculation.
    Does anybody have data or a reference about displacement amplitude VS
    damage between TI and PMMA?

    Thanks a Lot

    Marco Viceconti


    --------------------------------------------------
    MARCO VICECONTI (vice@tecno.ior.it)
    Laboratorio di Tecnologia dei Materiali tel. 39-51-6366865
    Istituti Ortopedici Rizzoli fax. 39-51-6366863
    via di barbiano 1/10, 40136 - Bologna, Italy

    Tiger! Tiger! Burning bright in the forest of the night,
    what immortal hand or eye could frame thy fearful symmetry?
    --------------------------------------------------
    Opinions expressed here do not necessarly reflect those of my employer
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