If you are also a victim of MVP (mitral valve prolapse), I have a suggestion. Please respond if interested.
Dear David:
It is difficult to get a great look at the spinal cord using the CT scan, so this might be an overcall concerning cord impingement. We use the MRI (much better at viewing the spinal cord and canal). The cord impingement (if real) might be causing the back pain. Usually, the impingement must be more severe before inducing symptoms but one can see pain from a mild impingement. An osteophytic ridge might induce some neuropathic pain but it would depend on where it was located, since most are one sided the pain would localize to one side of your body, and from your posting it is symmetric in location. The bone scan showing uptake in the SI joints would suggest some sort of degenerative disease/inflammatory entity/etc. I am not sure what to make of it without further knowledge. What all this together is sounding like is a systemic disorder such as an autoimmune entity or degenerative disease like arthritis. However, the overall lab workup should have shown some abnormalities such as a high sedimentation rate. So, I am sorry to say that I am not sure what is going on.
Sincerely,
CCF Neuro MD