GaitApplication?2 

This project deals with the GaitApplication?2 application created by Michael Skipper Andersen.

The application makes it possible to optimize the motion of a lower extremity model, which is kinematically over-determined.

For more details on the theory behind this application please see the webcast

Kinematic Analysis of Over-determinate Systems (Michael Skipper Andersen, 22. February, 2007) and please also carefully read the documentation in the GaitApplication?2.pdf, which is found together with the GaitApplication?2, before trying to use it.

The theory behind the POSONLY and POSVELACC solver settings are described in the following journal paper:

M. S. Andersen, M. Damsgaard, J. Rasmussen. Kinematic Analysis of Over-determinate Biomechanical Systems. Computer Methods in Biomechanics and Biomedical Engineering, 12(4), 371-384, 2009. dx.doi.org/10.1080/10255840802459412.

Additionally, the theory behind the SCALE solver are described in:

M. S. Andersen, M. Damsgaard, B. MacWilliams?, J. Rasmussen. A Computationally Efficient Optimisation-based Method For Parameter Identification of Kinematically Determinate and Over-determinate Biomechanical Systems. Computer Methods in Biomechanics and Biomedical Engineering, 13(2),171-183, 2010 dx.doi.org/10.1080/10255840903067080.

In the AnyBody? Model Repository, there are two models which makes use of this application:

• Application/Examples/GaitUniMiami?
• Application/Examples/Runner

Also, the lunge model has also been created using this, but the model in the repository only shows the
final result.

These models have a fifteen step procedure defined in the top of the main file, which should explain the user how to make use of the application in connection with an AnyBody? Model, but as the fifteen steps implies this is not so straight forward. Please keep in mind that this is a temporary setup, in time these facilities will find their way into the AnyBody? System.

We will try to support the use of this application the best way we can, but we foresee that it might be a challenging task, so keep in mind that this application is a temporary thing, which makes it possible to use these facilities before they become available in the system.

Finally, please keep in mind that this application only works with the pre-defined topology of the lower extremity model.

All feedback is very welcome and we hope that you will find this piece of software useful!

PLEASE NOTICE: With the release of the AnyBody? Modeling System version 4.1, the funktionality contained in GaitApplication?2 is now available directly in AnyScript? and there is no need for GaitApplication?2 anymore. I will therefore not release any more version of GaitApplication?2 or maintain it.