Numerical simulations of the diaphyseal fractures of the human humerus bone using modular plates with shape memory compression staples

Abstract

Ni–Ti alloys are used in bioengineering applications as they join important qualities as resistance to corrosion, biocompatibility, fatigue resistance, MR compatibility, kink resistance with two unique thermo-mechanical behaviors: the shape memory effect and the pseudo-elastic effect. The adaptive modular implants based on smart materials represent a superior solution in the osteosynthesis of the fractured bones over the conventional implants. To realize the model of the modular plate we used SolidWorks software. The small sizes of the modules enable the surgeon to make small incisions, using surgical techniques minimally invasive, having the following advantages: reduction of soft tissues destruction; eliminating intra-operator infections; reduction of blood losses; the reduction of infection risk; the reduction of the healing time. Numerical simulations of the assembly humerus bone- modular implant are realized using Visual-Nastran software. The Von Misses stress diagrams and the displacements diagrams are obtained.

Key words:

modular plate, human humerus bone, NiTinol, osteosynthesis.