View Full Version : stick fretting between Ti alloy and PMMA

04-30-1997, 01:04 AM
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

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