There is a good article in Women's Health
this month in regards to Chronic pain and the fact that sometimes the nerve does not "shut off" long after the injury has healed. At least this would account for the fact that nothing shows on MRI's, X-Rays, CAT scans, Bone Scans etc., etc.. The hope was that the nerve blocks that I had would work "like shutting down and restarting your computer". One worked for 4 days, the next one 2 (they won't repeat them).