He That Invents Augments the Power of a Man and the Well-Being of Mankind.
This link has many of the ongoing artificial disc replacement trials listed here:
A general government site is here (but search for artificial disc replacement of various spinal terms):
Check out the latest (Sept. 04) and most comprehensive paper yet written by top U.S. doctors on the Charite artificial disc replacement study. A special thanks to the authors, including doctors: Geisler, Blumenthal, Guyer, McAfee, Regan, Johnson and Mullin. Click here to render the PDF doc. This article is featured in the Sept. 04 issue of Journal of Neurosurgery.