Optimum Configuration of Cannulated Compression Screws for the Fixation of Unstable Femoral Neck Fractures: Finite Element Analysis Evaluation

Figure 8

Strain nephograms showing the principal strains plotted in percent with a yield strain value of 0.9%. Orange regions indicating the strains above 0.9% and at higher risk of cutout. (a) Triangle model. (b) Inverted triangle model. (c) Anterior triangle model. (d) Posterior triangle model. (e) Vertical model.