My bone came from the back area where they cut it away to release the nerves. They sort of powdered it during the surgery and mixed it with a gel type filler. Then they put it into a mold of some sort and put it in where the disc was removed. They said this has worked best for the fusion and I have fused very well. Perhaps if I had done the surgery years ago before the damage was so bad I wouldn't be in pain now. I do have to admit that the feeling that your back is "slipping out of place" is gone now and I don't freak out every time I sneeze because the shooting pain of the nerves is not there anymore.
I hope you got to yours in time and that you will have complete fusion with no pain left at all.
Oh, they did INSIST that I wear a bone stimulator from about two weeks out (four hours a day) for several months. After they could see fusion going well, they stopped the bone stimulator. It's annoying, but does work for many people better than the "just give it time" theory. If they haven't made the suggestion, you may want to ask at your follow-up.
Also, I totally agree with Jag. The pictures are amazing!!
DDD, CHRONIC PAIN SYNDROME, TLIF L5-S1 2009 (failed), FIBRO, MINEYER'S (SP?), VERTIGO, MIGRAINES, GERD, SLEEP DISORDER, NISSEN FUNDOPLICATION (failed), DEPRESSION, EXTREME ANXIETY DISORDER, OCPD, PTSD, CHRONIC MUSCLE SPASMS, HUMAN GROWTH HORMONE DEFICIENCY, VITAMIN D DEFICIENCY, CARPLE TUNNEL SYNDROME, EXTREME IDIOPATHIC HYPOGLYCEMIA FROM AGE 12