I am posting this to encourage everyone that it may take time, as it did in my case, but there is hope! I just had a caudal esi and the results have been wonderful. Yes, I have had 5 esi's and a rfa in less than 2 years. Some did better than others. But I've stuck with the same pain guy and he keeps meticulous notes on each injection. The one I just had was the first in a year. A caudal esi. And buddy, we hit the sweet spot. I have a fused L4-L5 so it makes these injections very tricky. The needle has to manuever around scar tissue and metal but my doc finally figured out how to get the best "coverage." This one injection has given me about 70% relief! I had it on Tuesday and by Saturday I was able to drive to Atlanta (45 mins), watch a great show, Rain, at the fabulous Fox Theatre, have drinks afterwards with friends and drive home with minimal discomfort. Left home at 5:30 and got back in at 1 am. And I felt tired but OK. Yes, I kept on my meds but decreased them a bit. And today I made a pot of spagetti and didn't have to sit down once!
So they "can" work. I've waited for this and now I hold my breathe that it will be effective for awhile. I have a 2nd scheduled this Tues. I'll check back in.
So take heart, spineys.