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Finite element analysis is one of the most used tool for studying femoralneck fracture. Nerveless, consensus concerning either the choice of materialcharacteristics, damage law and /or geometric models (linear on nonlinear)still remains unreached. In this work, we propose a numerical quasi-brittledamage model to describe the behavior of the proximal femur associated with twomethods to evaluate the Young modulus. 8 proximal femur finite elements modelswere constructed from CT scan data (4 donors, 3 men; 1 woman). The resultsobtained from the numerical computations showed a good agreement between thenumerical curves (load-displacement) and the experimental ones. The computedfracture loads were very close to the experimental ones (R 2 =0.825, Relativeerror =6.49%). The damage patterns were similar to those observed during thefailure during sideway fall experimental simulation. Finally, a comparativestudy based on 32 simulations, using a linear and nonlinear mesh has led to theconclusion that the results are improved when a nonlinear mesh is used. Insummary, the numerical quasi-brittle model presented in this work showed itsefficiency to find the experimental values during the simulation of the sidefall.

Femoral fracture load and damage localisation pattern prediction based on a quasi-brittle law : linear and non-linear FE meshing