I was treated for Scoliosis while I was in grade school.......Not fun at all, with the surgrey and cast that followed.
Before I started bike riding, I had a lot of back pain, espessialy if I did a lot of lifting. Also a lot of pain if I was just standing around....
Now, I ride my Felt 50 100 miles a week.......There is absoultly no back pain at all...It is amazing what bike riding has done for me. Best of luck and keep us posted on your progress.