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Hello,

I have been looking through some of the available models in search of a bilateral upper extremity one, but haven't had any luck finding any. Are there any available, and if not would there be an existing model that would be well suited to help create one?

Hi Paul,

I think most of the upper limb models (e.g. MOBL-arms) could be adapted to be bilateral. The process would involve creating new bodies/joints for the second limb, and essentially these would need to mirror the structure of the other side (e.g. I suspect the z-coordinates for a lot of things would need to be inverted). Looking at the similarities/differences of how bilateral gait models are constructed would help you figure out how the process might work.

Constructing this model could be a tedious manual process, so if you have some experience with scripting and OpenSim I think that would help.

Aaron

Hey Aaron,

Thanks for the insight. I will surely look into that, mirroring current models is a good idea. I think the interactions between the "connecting" segments in a bilateral model would be one of the main problems I would run into. Looking at the bilateral gait models would be a good starting point for understanding this a little better though.