I have a reherniation and collapsed disc at the l5-s1 level. in 2006 i had a microdiscect at the same level. is microdiscect or fusion appropriate now?

It depends: If you only have leg pain, then redo-microdiscectomy is the appropriate surgery. If you have severe back pain worse than leg pain, then fusion is the better surgery for you. The back pain should be in the center and should be associated with movement and use of your back. If you have both that are equal, you can have either but discectomy may leave you with back pain requiring fusion in the future

Depends: If you are experiencing progressive debilitating pain, and/or weakness and atrophy, or bladder issues, surgery could well be important. But preference is conservative approach, and physical therapy may yield a successful outcome. Could schedule Concierge visit for further guidance.