I don't have an intelligent answer as this question didn't even come up. But I'd rather use my own bone then something else and will make it throught the discomfort. I try to remember to ask the question thought at the next visit.
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Nov 07: STALIF Fusion L5/S1 ACTIV-L ADR L4/L5
Nov 09: Prodisc-C ADR 2 level C 4/5/6
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