ACDF,
The bone density of your veterbrae is important to know for any doctor to address any spinal issues. E.g., you can have an excellent T score of your femur (typical), but had TERRIBLE bone density in the target area of surgery. Why? Many of the spinal disease conditions are localized; they are often areas of poor blood flow and often involve low grade infections. Hence, tissues may be more compromised there than expected by the patient or doctor.
When you can, go here:
http://adrsupport.org/forums/search.php
Type in each of these terms, in the search box (key word or title only):
dexa scan
T score
osteoporosis
You get the idea. Lots to review through the years of posts!