Foot orthosis deformations following dynamic loading: a 3d finite element study

3D printing is increasingly used to design patient-specific medical products [1], such as orthoses. Indeed, 3D printed foot orthoses (FO) have an interesting potential as they can include optimized patterns to locally adjust the mechanical properties according to each patient’s gait pattern. Modelling FO is key to optimize its design and properties. This study aimed at quantifying FO displacement following loading, using finite-element modelling (FEM). An experimental setup included VICON motion analysis system to capture FO deformation and a custom-designed sensorized stick to manually apply controlled dynamic loading. A FEM was developed and tested mimicking the experimental conditions. Results showed that FEM could predict similar range of displacement values as the experimental setup. FO FEM is promising for future patient-specific applications.