Multi-segmented foot and ankle computer model

© IfS - Bewegungswissenschaft

Myonardo is a rigid-body computer model coded in Simulink (Matlab, MathworksTM), with which inverse and forward dynamic simulations can be performed. In inverse dynamic calculations, kinematic and external force input can be used to calculate joint force moments. When corresponding muscles forces are simulated, also joint forces can be estimated. In forward dynamic calculations, the movement of the body can be predicted based on simulated muscle activation. Hence, a computer model which includes detailed foot and ankle segments with corresponding joints can be used to study topics such as the effects of foot posture, muscle atrophy and delay in or absence of sensory input on balance performance.
So far, a one-segment foot has been attached to the full body in Myonardo and only the ankle joint is simulated. As a first step, a multi-segmented kinematic foot and ankle model has been added to the Myonardo software and validated. Also, a multi-segmented rigid-body foot model has been developed in Simulink, but this model still needs to be attached to the full body.

In future, the insertion of the foot and ankle muscles on the one-segmented foot need to be translated to the individual foot segments. When this is done, we can start performing modelling studies with the Myonardo and aim to answer clinical questions.
In this project we work together with our colleagues Dr. Kim Boström and Prof. Heiko Wagner from the Computational Movement Science Lab.