Does anyone take methadone for cronic lower back pain?

I am on methadone for chronic lower back pain. I had surgery in 98 and now may need another. Is there anyway to avoid surgery, and still take LESS MEDS?
I don't want to go through another surgery, but I can't stand the pain, and the meds seem to help less & less. I refused a higher dose recently because I am worried about addiction and the effects of taking too much medication. If I take more, It will be less effective AFTER surgery!
Anyone have a similar problem, and how did you handle it?

: http://alcoholdrugstreatment.info/does-anyone-take-methadone-for-cronic-lower-back-pain