The Neuromusculoskeletal Modeling Pipeline: MATLAB-based model personalization and treatment optimization functionality for OpenSim.
Claire V Hammond, Spencer T Williams, Marleny M Vega and 8 others
PMID 40383769WHAT IT FOUND
A new OpenSim software tool can personalize movement models and simulate treatments.
In a stroke survivor’s model, a simulated change in muscle control patterns predicted 9.9% lower metabolic cost at a faster walking trial and possible 60% faster walking without raising cost.
Key findings
01The paper introduces the Neuromusculoskeletal Modeling Pipeline, a MATLAB-based OpenSim add-on that personalizes neuromusculoskeletal models and optimizes simulated treatments.
02In a computational example using walking data from a single post-stroke participant, the Design Optimization simulation predicted a 9.9% reduction in metabolic cost per unit time for the selected gait cycle.
03The authors interpret these model results as suggesting that the simulated subject could potentially increase self-selected walking speed by 60% without increasing metabolic cost, but they also state that post-intervention data are required to validate such predictions.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The example used data from a single person, so it cannot show what would happen across patients. The predicted treatment was hypothetical and was not given to any patient. The authors state that post-intervention movement data are required to evaluate, refine, and validate the predictions. The software currently cannot personalize bone geometry from clinical imaging, and Treatment Optimization lacks a muscle fatigue model. The authors report that some computational steps took substantial CPU time, which may limit easy clinical use.
Declared interests
The supplied text lists the National Institutes of Health, the National Science Foundation, and the Cancer Prevention and Research Institute of Texas as funders. It does not provide a competing-interests declaration.
The easy way to misread this
Do not read the predicted 60% faster walking as evidence that this treatment works in stroke patients. It was a computational simulation from a person’s existing movement data, and the authors say post-intervention data are still needed to validate predictions.