Investigation of Modeling Differences between OpenSim and Visual3D for Gait Analysis of Healthy Gait

This study compares the biomechanical results of healthy individuals walking straight using OpenSim and Visual3D which differ in their optimization and modeling approaches for kinematics and kinetics calculation. The motion capture data of nine healthy subjects were processed on OpenSim and Visual3D according to each software's recommended approach and their kinematics and kinetics information was analyzed. Our analysis shows that some of the differences in the kinematics and kinetics between the two software can be attributed to the modeling difference of the pelvis, hip and ankle.