How does this happen?

[watsnext]

Well my question is pretty simple. In dec '09 I had my L4/L5/S1 fused, since then I have went through several tests, exams and pt. Now my current MRI shows that the L5/S1 disc is bulging and I have Arachnoiditis disease. According to my doc, he says this is all normal. That is my question. Is this all normal and am I going to spend the rest of my life in this type of pain? The pain feels like I never even had surgery. I hope this will all go away, so I can get on with my life with my family.
Help please

[watsnext]

My thoughts exactly, but that is what the radiologist confirmed on my last MRI, along with a rare disease called Arachnoiditis (Scar tissue), which I think most people should look into. From what I have read on here, alot of people are describing the systems that go along with this rare disease. But yeah, I can't seem to figure that one out as well, that's why I was hoping if someone, anyone has ever heard of it before. The bulging disc seems to be right in the middle of my fusion, and it is as clear as day on the MRI. Got me, never heard of it either, nor can I fathom of how it could even happen, since a fusion, you can't move that area at all to slip the disc.
Got me :(

[Kalvin]

There's something I'm missing here, you said you had a L4/L5/S1 fusion. How can you have a bulging disc at L5-S1 if you had it fused?