Thank you for your helpful response. I have had 3 facet injections in the past few months. Unfortunately, these were all multilevel (and not the single level diagnostic procedure that you outlined in the article). I had no short term relief (i.e., first 3 hours) from any of them. I did get some long term relief from the second (about 6 weeks with moderate to good pain control). I also had a radiofrequency ablation with no relief.
My surgeon said that my flexion/extension X-rays indicate that there may be some facet motion at the fused level (C6-7) caused by the non-union. Like you, he also raised the possibility that the pain could be coming from C5-6 due to too much facet motion at that level. However, he indicated that the ADR appears to be in proper position and functioning well.
With all that said, do you feel that my lack of short term pain relieve from the multilevel facet injections rules out a problem with the C5-6 facets, and would suggest simply revising C6-7 with an ICBG?
Thanks again.