Quote Originally Posted by Pooka1 View Post
I have no idea.

I do know for a fact that lateral curvature and rotation are not tightly coupled and you can have a wide range in rotation with a given Cobb angle. At fusion, both my daughters had about the same curve, Thing 1 had a 58* and Thing 2 had a 57*. But Thing 1 was extremely rotated and it was obvious to lay folks something was radically wrong. Thing 2 had no visible rotation standing up. The only way even I could tell she had a high angle curve is to ask her to stand relaxed facing me and drop her arms by her sides. One arm was somewhat closer to her body than the other. That's it. That difference was due to the different amounts of rotation even with the same Cobb angle.
Reading through these posts again and finding important info I missed.