Dear angel76,
Have you tried a pelvic angles assessment with hip abduction directly lateral in the coronal plane? See my posting Trial of a test and the one on APAS.
I find that most patients with a scoliotic patterning have two pelvic angles that increase in difference as the hip abduction proceeds. Correcting the pelvic angles to anatomical neutral brings excellent results. If you would like the most common contributing factors from pelvic angle difference toscoliosis, I would be glad to forward these to you.
Hope you find this helpful.
Best regards,
Neuromuscualr.