I was just wondering if anyone has had, or has any info regarding disc replacement revision. Back in 2009 I had fusions of L5-S1, L4/5, and a pro disc replacement of L2-3. Since the operation I really haven't felt that the surgery was successful. Still have a lot of pain, and numbness that i had before, but I have been dealing with it because disability is not an option right now. I know that there is no long term studies available as ADR's are fairly new. Reading about revision surgery scares me to death. What do the doctors do for a patient with an ADR when it fails.