I had one PM that was meticulous locating areas for facet injections, had three staff over me, super cautious, and used just novocaine at first to see if any effect then would move on to
depomedrol (~cortisone). They never worked, five tries. I moved on to a guy that did it solo, wrote scripts and I was out of there in 5 minutes and most always worked. Now these were not Epidurals, I had a bad reaction to those twice and I wont go for that anymore.