I see. the SCS trial is not invasive. I've talked to 3 people who had the Abbott DRG SCS and they all got significant relief. One was a nurse and she said it really helped her. 90% relief from her foot pain. Two men said they got between 60 to 75% relief. They all had that done between 1 1/2 to 2 years ago. They all recommend I try it. Has any of your doctor's talked to you about a pain pump? That's probably the last treatment for chronic pain.