@gently I'll have to ask my doctor about this: "Information about bone matrix before surgery is so crucial" when he returns from Paternity leave. Also, my numbers with the P1NP and CTX did what they were supposed to do when they were tested. But I'm sorry I don't have the numbers handy. I suppose I should ask for a retest. As I believe I am coming up on a year next month or in June from the first test. With ALL the tests they DID do before my surgery - I know they were shocked when it happened. HOWEVERf - the upside was using my own bone in the blender to fill the cage with so I didn't have any infection risk from cadaver bones or synthetic. Everyone seemed happy with that. I know I am 6 pages in a USCD medical text book now on how to do a cervical spine surgery! (they said they did absolutely EVERYTHING all in one surgery! 😉