[Maria]

The person I mentioned who has the lumbar fusion surgery had non union and screws were loose. Fusion didn't take. He was recommended to have the revision surgery because of loose screws and non non union. His original surgery was 2 years prior to finding out that he had non union and loose screws. He actually didn't feel badly re the non union but the loose screws were impinging on something (nerve I think) and creating increased pain/limitations.

I'm sorry if I didn't get the story straight initially. The question you posed to Mark sparked my memory re this particular person's situation.