Muscle paths fail to wrap on the outside of a WrapTorus

[Birgitt Peeters]

Hi,

I am trying to model spinal alignment in scoliosis patients, and therefore I need to adjust the lines of action of spinopelvic muscles. I was looking into using the wrapping torus for a specific application where I wanted to let some of the muscles wrap on the outside of the torus, and others on the inside. However, the lines that should wrap on the outside, always seem to fail to do this, and wrapping on the inside is forced. I have played around with the characteristics of the torus, but no matter what I try, the lines always fail to wrap on the outside.

I was wondering if someone had similar issues, or whether someone could tell me if wrapping on the outside of the torus is not possible?

Thanks in advance!

Birgitt