I had hip surgery when I was six then again on the other hip when I was 10. Ever since that I had scoliosis come and go. Kind of strange, actually. I do not think I have any curvature at the moment, it just 'fixed' itself. When I was in Junior High I would have it for a year, 'fixed' for a year and what not. Probably until 15 or so. Maybe puberty, growth or something had an affect on it, I don't know.
Luckily, though, my back doesn't bother me. Being 26 with arthritis and knowing I will have to get a hip replacement sooner than later, is somewhat bothersome though.