My scoliosis seems be "idiopathic", which means no obvious cause. Doesn't look reversable. Idiopathic scoliosis develops as bone growth develops. Once growth stops (low 20's), the scoliosis stops growing. Other scoliosis is "functional", spine gets pushed out of shape, you can retrain to eliminate it.
One of my cousins also has it, suggesting it's congenital. It consists of 2 C curves, one cervical, the other lumbar. The cervical is minor, the lumbar a bit worse, but not enough for any doctor to recommend surgery. Both curves are mainly lateral.
I was put through rehab exercise years ago to help strengthen up the core (I was horribly weak most of my life) by an orthopedic doctor. Since then, have concentrated on keeping back muscles strong to hold things in place. By now I can arch my back in my sleep.
Haven't seen a chiro or ortho doc in a while. Job problems, and we don't have the medical care you folks have, ours can cost a pretty penny. No pain, I can squat and deadlift fine, so I'm happy. However, I can feel the right side of low back jutting out a bit more than left side. Twisting my hips counterclockwise a bit makes everything nice and even. When squatting or DLing, I try to put a bit of twist there to correct for the scoliosis, but don't always remember. At any rate, the muscles seem to be developing equally.
Have experimented with twisting hips left side down right side up, hoping that will correct the lateral curve. Seems to help, but too much to concentrate on when lifting. I wear a heel lift in right shoe to help.