The Effect of Various Structure Mass to the Dynamic Response and User Convenience in 3D Printed Articulated and Non-articulated Ankle Foot Orthosis

This chapter investigates the critical factors influencing the design and performance of 3D printed ankle foot orthoses (AFOs), focusing on the dynamic response and user comfort. It begins by highlighting the significant energy expenditure and gait limitations experienced by individuals with lower limb disorders, such as hemiplegic disease and joint injuries. The study delves into the design and material selection processes, utilizing the Analytic Hierarchy Process (AHP) method and Indonesian body anthropometry to create AFOs that meet user expectations and provide comfort during walking. The chapter explores the biomechanical analysis of articulated and non-articulated AFOs, emphasizing the importance of contact definitions and meshing processes in simulation. It presents detailed results of stress and deformation patterns under various loading scenarios, including gait cycle forces and hinge loads. The findings reveal that increasing the thickness of AFOs can enhance strength and reduce deformation, but also affect the overall weight and user comfort. The chapter concludes with recommendations for optimal AFO thickness based on stress, deformation, and weight considerations, providing valuable insights for the development of effective and user-friendly AFO prototypes.