I personally would not choose to have surgery unless I felt very strongly that my pain was truly intolerable, or if my thoracic curve was so large that it was going to impinge on my heart and lungs. (That rarely happens in curves under 70 degrees.)
As Pooka suggests, I would give PT an honest try before giving in to surgery. An honest try should almost certainly include 10-15 minutes of core strengthening exercises every day.
--Linda
Never argue with an idiot. They always drag you down to their level, and then they beat you with experience. --Twain
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Surgery 2/10/93 A/P fusion T4-L3
Surgery 1/20/11 A/P fusion L2-sacrum w/pelvic fixation