Is this normal for a person with rods in their back due to scoliosis?

I'm a 16 year old girl, i was diagnose with Scoliosis in 07 i had surgery in 09 for it . So my docter told me i no horse playin ext. , but i horse play anyway, i dance really hard i had two falls since my surgery and my BACK NEVER HURTS . i have rods in my back i cant feel a thang . is it normal? am i just bless? . and i can sit in any position w/o back pain. . .wow maraculous huh