It varies with the method the surgeon is using and the nuraber of levels. But you can probably get a rough idea from what each of us posts. I had a 360 fusion, that is, they go in first through the back, then flipped me over and went in again through the back. I had three surgeons working on me. It took about 6 1/2 hours for 8 levels.
Hope this helps,
Emily :wave: