I forgot to mention that I heard from Dr. Fenk-Mayer about how many of the DSS-"motion" devices Dr. B has implanted.
30 DSS-"motion" patients // only 5 patients with preexisting ADR(s)
I'll be in an elite club.

However, I have all the confidence in the world in Drs. Bertagnoli and Fenk-Mayer.
(DSS-"motion" = the DSS device with the coupler that allows motion [not FDA approved]. The "regular" DSS [without the coupler] is actually used in the US as a traditional fusion device)