Just another comment. Unfortunately, most doctors who give a diagnosis or "Failed Back Syndrome" don't really know what ELSE to call it. OR they don't really know what it wrong -- they aren't willing to do a lot of testing to find out. (not all doc's are like that)
But "Failed Back Syndrome" isn't really a diagnosis because it doesn't diagnose anything. It's just a bandaid type diagnosis. It just covers anything and all that might be wrong with you, but yet doesn't diagnose ANYTHING.
Unfortunately all too many doctors use this as a "diagnosis." Insurance companies should DENY this as a diagnosis to force the doctors to look into what is REALLY wrong.
Just my opinion.