I have never considered scoliosis a Capricorn trait, but Capricorn does rule the bones, so could be. My Capricorn Moon is well aspected by other planets, meaning it's not the cause of my scoliosis, but it's worth thinking about it. Have you ever seen a good chiropractor? Not one who "cracks" your back, a gentle one. I had a spinal fusion at 6, another operation at 10, and wore casts and braces. I had mine from birth. But my 20s and 30s were pretty good. It's important to try to keep weight down and exercise. I know that's hard when you are in pain, so go slow, start slow. Also, buy custom orthotics for your shoes. It helps the way you stand.
I also saw many physical therapists in my life, but the best was a woman I met in my 20s. She noticed I was a tense person, and got me to meditate. It helps you to see when and what causes you to tense up, so you can feel it before it gets so bad you get in pain. Capricorn Moon people hold in emotions, and that's a problem that could be showing up in your back. Isn't it worse when you are stressed out? Get more "me" time.