Hi Katelyn,

A couple of years ago I've published a database with 3D kinematics of the upper limb, called the "Shoulder movements database". You can access it here: https://simtk.org/frs/?group_id=465 (scroll down to the bottom of the page).

The database base contains 3D locations of bony landmarks during various upper limb tasks, as well as joint rotations according to ISB definitions. Maybe you can get some inspiration from the format I chose to present my data in.

Cheers, Bart