Fatigue Life of Superelastic Springs for an Anterior Cruciate Ligament Prosthesis
Biomechanics/Biomaterials Research Group, Ecole Polytechnique, C.P. 6079, Succ. "Centre Ville", Montreal H3C 3A7, Québec, Canada
2 Imago Canada, 9557 Côte de Liesse, Dorval H9P 1A3, Québec, Canada
The fatigue behavior of NiTi and copper based shape memory springs destined to be integrated into an anterior cruciate ligament prosthesis has been investigated and compared to the fatigue life of NiTi wires of low diameter. The degradation of the superelastic parameters has been evaluated and the number of cycles until rupture has been plotted as a function of the internal strain. The influence of the solicitation mode on the fatigue life of Shape Memory structures is pointed out.
© EDP Sciences