A comparative study of orthotropic and isotropic bone adaptation in the femur.

ABSTRACT: Functional adaptation of the femur has been studied extensively by embedding remodelling algorithms in finite element models, with bone commonly assumed to have isotropic material properties for computational efficiency. However, isotropy is insufficient in predicting the directionality of bone's observed microstructure. A novel iterative orthotropic 3D adaptation algorithm is proposed and applied to a finite element model of the whole femur. Bone was modelled as an optimised strain-driven adaptive continuum with local orthotropic symmetry. Each element's material orientations were aligned with the local principal stress directions and their corresponding directional Young's moduli updated proportionally to the associated strain stimuli. The converged predicted density distributions for a

SUBMITTER: Geraldes DM 

PROVIDER: S-EPMC4272570 | biostudies-literature | 2014 Sep

REPOSITORIES: biostudies-literature