simtk.org

Hey guys

I would like to obtain the muscle forces of scone results of deficits weakness (gs-pf-so) from the following paper
"Predicting gait adaptations due to ankle plantarflexor muscle weakness and contracture using physics-based musculoskeletal simulations"
https://simtk.org/frs/?group_id=1631

to do this, I have opened the osim model and run inverse dynamic tools by entering the motion.sto from the results folder. then plot the total muscle fiberforce through Tools>Plot.

the issue is that muscle force for gastroc muscle is not displayed:
Do you know how to get the muscle forces of optimization scone result?

There are a few issues with this workflow.

With regards to Inverse Dynamics, this tool will only give generalized forces (including joint torques) and not muscle forces. The Overview of OpenSim Workflows page is helpful for learning about what different tools can provide.

With regards to the plotter tool, the image shows that the input data files are not being plotted. The documentation pages for the Plotter is helpful here. Pay close attention to the Curve Creation subpage in particular.

It could be good to start with the Examples and Tutorials pages first. Users often find these useful to start with since OpenSim has many capabilities and it can be confusing what to start with often.