Confused with the coordinates of shoulder joint.

Yixin Shen · Post by **Yixin Shen** » Thu Jun 10, 2021 10:23 am

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!