Three stents? You've really lived haven't you?
And inversion tables are good for maintenance but get the injury sorted out first.
I mentioned TENS therapy earlier in the thread. That's those little electrodes the stick to your back and it send wacky feeling jolts into the muscles. It confuses the neuro pathways (or whatever) into not sending the intense pain signals to your brain all the time. It's been in use for a very long time and works quite well. They have also finally accepted acupuncture as an approved nerve treatment but I found it's not quite as effective... and the first time I had it done it made me have to poop.
Awkward!!
but I didn't poop... at least not on the table. lol