Fig. 4
A Comparison between mechanical stiffness and μFEA estimated stiffness for all 3D printed phantoms. The overall high r2 =0.84 value indicates a good linear fit between mechanical and μFEA stiffness results. The Kendall correlation coefficient of 0.86 is indicative of correlation between mechanical and μFEA stiffness results. B The Bland-Altman analysis shows the agreement between mechanical and μFEA stiffness. The trabecular bone phantoms that fractured during mechanical testing are marked with a pentagon, bone phantoms that have high error are marked with a diamond, and bone phantoms that have both high error and fractured are marked with a star