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Updated: Jun 18, 2025

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
Published on: April 11, 2018
OpenSim Moco tracking simulations efficiently replicate predictive simulation results across morphologically diverse
Jaylan I Hamad1, Kaitlyn B Kuchinka1, Joshua W Giles1
1Orthopaedic Technologies and Biomechanics Lab, University of Victoria, Victoria, British Columbia, Canada.
Abstract:
OpenSim Moco enables solving for an optimal motion using Predictive and Tracking simulations. However, Predictive simulations are computationally prohibitive, and the efficacy of Tracking in deviating from its reference is unclear. This study compares Tracking and Predictive approaches applied to the generation of morphology-specific motion in statistically-derived musculoskeletal shoulder models. The signal analysis software, CORA, determined mean correlation ratings between Tracking and Predictive solutions of 0.91 ± 0.06 and 0.91 ± 0.07 for lateral and forward-reaching tasks. Additionally, Tracking provided computational speed-up of 6-8 times. Therefore, Tracking is an efficient approach that yields results equivalent to Predictive, facilitating future large-scale modelling studies.
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