Rotation Sequence for Kinematic Data

Provide a comprehensive data set with associated models that will enable researchers to validate musculoskeletal model estimates of muscle and joint contact forces in the knee.
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Rachel Baker
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Joined: Wed Aug 20, 2014 2:22 pm

Rotation Sequence for Kinematic Data

Post by Rachel Baker » Tue Oct 09, 2018 12:44 pm

Hello,

This is a general question about the motion capture data. What is the rotation sequence between the tracking and anatomic coordinate systems for the motion capture data? I've looked in several places online and in papers and can't seem to find the answer. I'm specifically interested in the 4th Edition data, but I think the answer is probably the same for all editions. If I'm missing it somewhere, please let me know where I can find this information.

Thanks,

Rachel Hall
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B.J. Fregly
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Joined: Wed Mar 12, 2008 6:55 am

Re: Rotation Sequence for Kinematic Data

Post by B.J. Fregly » Wed Mar 02, 2022 3:00 pm

There is no rotation sequence for motion capture data. Mocap data is just (x,y,z) coordinates of markers, which we turn into joint motions (some of which may have rotation sequences associated with them) using an Inverse Kinematics analysis.
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