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Confused with the coordinates of shoulder joint.

Posted: Thu Jun 10, 2021 10:23 am
by wusuowei322
Model File: https://simtk.org/projects/arm_swing
Product Version: OpenSim 4.2
Operating System: Windows 10

I'm trying to add the coordinate of glenohumeral joint rotation and flexion to the model, but it always rotates as a cone when shoulder flexing or extending. How can I make the humerus rotate around its long axis all the time?
Thank you!