How to find muscle attachments and lines of action on a patient specific FE model?

[Yunus Rezvanifar]

Femur bone shape in OpenSim (just like other bones) is too coarse and doesn't match a patient-specific CT-based bone model, in detail even when it is scaled.
Muscle Force Direction plugin gives you muscle attachment points and lines of action for scaled osim model while neither bone geometry nor muscle attachment points may necessarily be the same among osim model and CT-based FE model,
so how would you recruit this plugin to get accurate results?

Regards.

[Ayman Habib]

Hello,

The bone geometry is used exclusively for visualization rather than for any computation, so the quality of the meshes has no role to play in modeling
of muscles or their attachments (other than eye-balling where the muscles attach).

Hope this helps,
-Ayman

[Yunus Rezvanifar]

Hello,

The bone geometry is used exclusively for visualization rather than for any computation, so the quality of the meshes has no role to play in modeling
of muscles or their attachments (other than eye-balling where the muscles attach).

Hope this helps,
-Ayman

Thanks, Ayman, that was quite helpful.
Where can I find the real femur bone that OpenSim works with?
Is it a mathematical model implemented in a script or something else?

thanks,
Yunus