5 weeks ago I had a very similar surgery involving laminectomies and fusions at L3-S1. Mine was all done from the back in one surgery. My L4-5 was done a little differently than the others because it was in the worst shape with a lot of nerve compression. From what I could discern from the operative report what remained of my disc was cleaned out and a cage was used only at that level. The other levels were fused using autografts and allografts. All levels were stabilized using pedicle screws and rods. The nerve pain in my left leg seems to be resolving itself already so I think this is going to be successful. I will know more at my 6 week checkup next week. I am 78 with a lot of other health problem It was not an easy decision for me to go ahead and have this surgery but something had to be done about the amount of nerve compression I had as it was only going to get worse. Good luck trying to arrive at a reasonable decision for yourself.