A Comparative FE Analysis of a Flat Foot with and without a Custom-made Orthotic Insole

In the present study a stress analysis on a deformed footprint was performed in the case when an anatomical customized insole is used and in the case when an anatomical customized insole is not used. For specific deformities of the foot, an anatomical insole is made by using EasyCAD software. Solid models of the foot and insole, which are necessary for creating finite element models, were obtained by scanning the physical objects of the footprint and insole, and by their reconstruction and optimization in Geomagic software. Stress analysis was performed in Catia V5 R21 software for the case of a neutral standing position on the ground. Results show maximum values of the pressures in the medial region of the foot and toe region in the case when an anatomical customized insole is not used. With the use of the customized insole, pressures are significantly reduced, both by size and region.