The effect of Knee-Ankle-Foot orthosis stiffness on the parameters of walking

Computer Methods in Biomechanics and Biomedical Engineering
Sayed Mohammad Ali AbtahiAram Ghaziasgar

Abstract

The purpose of this simulation study was to analyze the effect of variation in Knee-Ankle-Foot-Orthosis stiffness on the joint power and the energy cost of walking. The effect of contractile tissue was simulated using linear elastic spring and viscous dampers in knee and ankle joints. Then, joint angles, ground reaction force, were collected from Twenty chronic hemiparesis subjects (15 males and 5 females) and twenty control subjects (14 males and 6 females), and spring stiffness were considered as the inputs. In this new study, the generated muscle torques were optimized by changing the stiffness as the desired output in the mathematical model attained by the MATLAB SimMechanics toolbox. Finally, the simulated mathematical model was introduced as an appropriate substitute in obtaining the optimized stiffness with a more convenient and efficient designed orthosis.

References

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Software Mentioned

SimMechanics
MATLAB
Simulink
MATLAB SimMechanics
KAFO

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