Basically it's called a facet block. It has a little cortisone in it. I had the L4, L5, and L5, S1 on both the right and the left down around my spine. I had an epidural last year a couple times, and neither one of them seemed to really take good effect. Maybe they helped a little bit, but not a whole lot.
JD Drew on leaving the team in March to get a shot for his back.