Chadwick Team

See also Chadwick Final Presentation.

Team members

• Ed Chadwick, Restorative Medicine Group, Institute for Science and Technology in Medicine, Keele University, Staffordshire, UK.
• Dimitra Blana, Visiting Researcher, Restorative Medicine, ISTM, Keele, and Case Western Reserve University, Cleveland, Ohio*.

(*Much of this work done in collaboration with the Kirsch lab at Case Western Reserve University and Ton van den Bogert of Cleveland State University.)

Big picture

Workshop goals

Our specific aims for the workshop are:

1. To link the OpenSim visualisation with our real-time model
2. To extend the OpenSim visualisation to represent joint contact forces

Results

The movie on the left shows the activation coloring of the muscles in the Simbody visualiser (red is more active). The movie on the right shows arm abduction with the real-time model linked to Simbody Visualizer. It shows the visualization of glenohumeral stability as it is affected by deltoid and rotator cuff activation. When the deltoid is activated alone it causes glenohumeral instability (shown as a red vector), rotator cuff activation increases the stability (green vector).

For more information, see our project page on Simtk: https://simtk.org/home/das.

Related papers

• Bogert, A. J. Van Den, Blana, D., & Heinrich, D. (2011). Implicit methods for efficient musculoskeletal simulation and optimal control. Procedia IUTAM, 2, 297–316.
• Chadwick, E. K., Blana, D., Simeral, J. D., Lambrecht, J., Kim, S. P., Cornwell, A. S., Taylor, D. M., et al. (2011). Continuous neuronal ensemble control of simulated arm reaching by a human with tetraplegia. Journal of Neural Engineering, 8(3), 034003.
• Blana, D., Kirsch, R. F., & Chadwick, E. K. (2009). Combined feedforward and feedback control of a redundant, nonlinear, dynamic musculoskeletal system. Medical & Biological Engineering & Computing, 47(5), 533–42.