Re: Rejection? Infection?
In all of my research and believe me there's been a ton since I've endured 8 spine surgeries, of which four were fusions of 3 to 10 levels, there's no discussion of rejection of donor bone, in the same sense as when my body rejected a prosthesis. The donor bone is treated, and neutral, so really it comes down to whether or not your body accepts it by completing the fusion.
According to my spine specialist, his only 5 patients who have had failed fusions over the years were first, smokers, and secondly a couple of them used donor bone rather than allow harvesting of their own bone. He harvested bone from my hip for the first fusion, which was done prior to BMP being approved by FDA. The other three, including my 10 lvel fusion last December, he was able to use bonie taken from the laminectomy which is done at time of the fusion, and that is mixed with the BMP, so no need to harvest my bone.
Some doc's prefer to use donor bone, others prefer to use the patients bone, but realize that although the risk of non-fusion is small, even the clinical trials admitted that the low percentage of failures were mostly from donor bone. Not to alarm you, because with BMP being used, the success is still about 98%, it's just that of that maybe 2% failure rate, most of that 2% is from donor bone. Not enough info though to say if it was because of donor bone or other conditions which the patient had.
Best recommendation I can make, is that if you are having fusion, have a spine specialist instead of a general ortho or general neuro surgeon. If you need only a one level fusion, you have a better chance of ADR or flexible Dynses fusion with a spine specialist.
Best wishes with you surgery and do let the group know how you are doing.