Alexander had PT about 6 mos. after his surgery. He did the PT for many, many months in order to try to help his posture. It helped to some extent, although he still needs some reminders to stand up straight. It was mostly geared to core strengthening and other postural related muscle groups, as well as basic strength training. Most kids don't seem to need PT but I frequently asked about it and the surgeon finally consented when the fusion had probably completed itself.
Now Alexander works out at a health club under the occasional guidance of a personal trainer. I coach him with this when he's not with the personal trainer.
Good luck with your Halle's surgery. Now is the most stressful time but soon you'll be through it and she'll be on the road to recovery. You're doing a great job asking a lot of questions and trying to make the best decisions for her!
All the best,
Laurie
Mother of Alexander & Zachary:
Alex is 16 years old and in the 11th grade. He has congenital scoliosis due to a hemivertebrae at T10. Wore a TLSO brace for 3 1/2 years. Pre-op curves were T45 & L65; curves post-op are approx. T31 & L34. Had a posterior spinal fusion from T8 to L3 on 7/12/07 at age 12. Doing great now in so many ways, but still working on improving posture.
Zach is 13 years old and very energetic.