Spinal Cord Stimulator

I had surgery in 2004 due to my spinal cord being tethered; the neuro-surgeon released my spinal cord.  I have had numbness, various and sundry pains since then.  Most recently I was told by a neurology that my pain was coming from scar tissue pressing on nerves due to surgery on my back. I have had epidurals, caudels, nerve block injections, physical therapy, etc. and nothing has helped.  

I am now on trial with a "Spinal Cord Stimulator"; frankly, I can't see that it is helping that much. Is there anyone out there who can suggest another option.  The neurologist says surgery is not an option.

Any help would be appreciated.

Thanks.