Thoracolumbar spine and rib cage full body model in OpenSim :The simulation procedure

[RANDHEER SINGH]

I have tried to locate the full body .osim file and corresponding setup files (scaling setup, RRA Setup, and Static Optimization setup files, which contain actuator constraints and actuator controls files). However, I am only able to locate the .osim model file and am unable to find the setup files on the project page.

1. Can anyone please point me to the full body model resource file containing all the setup files (scaling setup, RRA Setup, and Static Optimization setup files, which contain actuator constraints and actuator controls files)?
2. What is the simulation procedure used to find muscle forces for a dynamic lifting task? Is it Scaling, IK, RRA, and SO?
3. Can anyone please guide how many minimum markers are required to simulate the dynamic lifting using this full-body model?

[Jacob J. Banks]

Randheer,
Thank you for your interest in our model.
The steps you asked about are described in detail on the OpenSim webpage. I won't be able to explain things any better.
https://opensimconfluence.atlassian.net ... timization

You can create your own setup files using the GUI.

As for an actuators file, I am pretty sure that the software comes with a MATLAB file that can generate an actuator file for you. If not, I think this is it:
https://github.com/jimmyDunne/opensim-m ... torsFile.m

As for RRA, we do not necessarily use that for this model. Not saying you shouldn't, we just aren't in the habit of doing it. With so many segments, it is difficult to discern which inertia property to adjust. We have also found (and demonstrated) that the inertial properties are assigned pretty well on the model.
https://pubmed.ncbi.nlm.nih.gov/39024736/

Hope that helps.
Jake Banks

[RANDHEER SINGH]

Jake,
Thank you for the prompt reply. I will try the methods you suggested to generate the setup files.