I don't know about the breast bone issue, but most curved spines are due to scoliosis. (If the spine is curved from side to side it is scoliosis. If the natural curves of the spine are over-exaggerated from the side view/profile it is kyphosis. Sorry! This is hard to explain without diagrams!) I think you need to have specialist look at this. Extra curves and twists can make other bones protrude and some hide. I was diagnosed with both of the above at 11, but nothing was done until I was 14. It was almost too late. I saw some improvement with treatment, but could have had a lot more success had something been done earlier. Prior to treatment, my skirts had to be hemmed at a slant and the zipper of my jeans looked crooked/slanted. I didn't have pain then, but from what I have heard and read severe curves left untreated can be painful later in life. I'm so glad you made an appointment now. Kids bones are so much more pliable and respond more to treatment than adults. I could say more, but I think you get the idea. I would love to hear an update, but you sound pretty busy. Blessings to you and yours! Holly