Judging from your past medical history, all the symptoms point to the spinal fusions that you have had. To be honest with you, not all fusion surgeries are successful. Mostly, after the surgery, patients will still have pain. That is because of some nerve injury or compression after fusion. What I can recommend are some exercises that would relieve pain after flare up or fusion;
Please check the links for details:.
Please note that these exercises cannot guarantee total relief of pain. The root cause of the pain still has to be solved.