Not sure of the numbers, but I had two disks in my neck removed and the vertebrae fused.
Woke up one AM and WOW did I have a sore neck / arm. Took two aspirin and went to work. It got worse and worse and WORSE so a few days later I went to the Dr's who shot an x-ray of my neck. He looked at it for about three seconds and told me "...you're getting an MRI, today..." which freaked me out a little. Saw the neurosurgeon the day following and he gave me the good news. They went in to fuse one, ended up fusing two. I used donor bone, as the Dr. told me the if I self donated, the donor site could easily take months to heal and would be far more painful than the actual surgery.
By the time I got into surgery, I was downing Vicodin like M&M's and they weren't touching the pain. My arm had started to twitch a little and I was genuinely freaked out. For me, it was like turning off a switch. Like magic. I was told not to freak out when the symptoms came back mildly with the post op swelling, but only for a couple of days. They were right. I got cut on Wednesday, went home Thursday PM, and back to work on Monday (I basically sit on my ass for a living so my work is very low stress, physically).
That was about seven years ago and I've had no issues, problems, or recurrence since.
For me, it was like a miracle; an off switch for some of the most intense pain I've ever had. Best of luck for similar results, my friend - B.B.S.