Foot disorders are often caused by dysfunction of internal structures, making it important to understand the mechanical properties of the foot for treatment and prevention. Previous studies have employed finite element analysis and dynamic simulations; however, it has been challenging to simultaneously incorporate dynamic analysis and deformation of soft tissues. In this study, we conducted motion analysis focusing on the foot using a lower limb musculoskeletal dynamic model that allows for the consideration of soft tissue deformation. The model's effectiveness in capturing foot morphological changes was verified through comparisons with motion capture data. Strain analysis was performed on the surrounding ligaments during ankle motion and on the plantar aponeurosis during toe extension to evaluate the mechanical properties of soft tissues in response to joint movement and to assess the structural interconnectivity within the foot mechanism. In the future, this approach is expected to be extended to other foot functions and to analyses involving coordinated motion of the thigh and shank.
GAMOU et al. (Wed,) studied this question.