Can someone explain to me the reasons for getting lumbar fusion vs. laminectomy, microdiscetomy.....and the rest. I have 3 levels of bulging disks, stenosis, and arthritis and I am on my last ditch effort tomorrow. I am getting my 2nd epidural. I already had the facet joint injections and tons of PT. I am still horrible. I think I will probably end up with surgry. I want to understand the reasons (basically) for doing these different procedures. I am so confused!