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• Process real-world data to calculate joint kinematics (IK) and joint moments (ID) during walking
• Quantify errors in IK and ID and understand acceptable errors
• Improve IK and ID results by adjusting the data and model
• Understand sources of IK and ID errors and characterize which changes improved results

You will accomplish this by working with walking data obtained from a gait laboratory. You will first use OpenSim tools to go through the individual steps of scaling a musculoskeletal modeling, estimating joint kinematics from marker data using IK, computing joint moments using ID, and adjusting the model and kinematics to reduce residuals and improve results. You will then use a tool called AddBiomechanics that optimizes these steps together.

Getting started

Downloading example files

For this tutorial, we will use files modified from the Rajagopal et al. 2016 model paper that can be downloaded here (LINK TODO).

Note: Users looking for the files to replicate the original work should instead download the files from the related SimTK project.

Completing the example

Continue on to the next pages to complete the steps using OpenSim and AddBiomechanics. 

If you are completing this example as a laboratory exercise for a course on human movement, you will need to submit answers to the questions on the (TODO QUESTIONS) page.