The answer is pretty easy. Your spinal joints, in various places, have LOCKED UP. This happens after an old injury heals, but the joint heals frozen. An example is, you sprain your wrist, tape it up, and after a couple of weeks you remove the tape and the joint is very stiff. If you didn't do something to restore the lost range of motion, the wrist would develop fixation, and arthritis … [Read more...] about Ask the Doc: How Did my Back Get This Way?