Bone Microdamage and Repair Simulations using an Elastoplastic Numerical Scheme

V. Kosmopoulos and T.S. Keller (USA)

Keywords

polymethylmethacrylate, trabecular bone, vertebroplasty,damage, finite element analysis, microdamage

Abstract

A numerical analysis of trabecular bone microdamage and cement repair processes are presented in this paper. The constitutive behavior of trabecular bone microdamage is modeled using an elasto-plastic material law and iterative finite element scheme. Uniform load and ramp load regimens are used to simulate moderate and severe microstructural damage, respectively, of a human thoracic vertebral body. Several cement repair (vertebroplasty) strategies are implemented using an anatomically precise, two-dimensional finite element model.

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