it does more than stabilize
Pooka1
Torso Rotation has been shown to improve many curves as well as stabilize. That's why the 4 month and 8 month findings are important.
Not only does this suggest that physical therapy is effective but that muscle imbalance and atrophy plays a part in Scoliosis. How or why this happens is still unknown.
You ask:
So the question is... can exercise or external bracing for that ever hope to provide enough constant pressure to certain areas of the vertebrae in a very targeted fashion to prevent wedging?
This is what McIntire wrote:
Quote:
Enhancing spine stability is the principle underlying our approach to the management of AIS with quantified rotational trunk strengthening.
BTW, you are right about the recent McIntire study. The sample didn't show a strong torso rotation strength asymmetry. However their analysis was fascinating. They suggest that this probably narrows the strength asymmetry down to the paraspinal muscles.
I believe that's what this recent study found. I'm going to get a copy to learn the details.
longterm yes, short-term no
Pooka1
The longterm effects are unknown. Strengh training may continue to work or it might gradually lose it's impact.
However it is not credible to question the 4 and 8 months results. Scientists and physical therapists around the world have all consistently produced the same results.