Contents
Commentary
n MESSAGE FROM THE MEDICAL EDITOR
Growth and Evolution 
Stuart M. Weinstein, MD
n FROM THE DESK OF THE PRESIDENT
Progressive Vision and Leadership: The Cornerstone of the North American Spine Society 
Jean-Jacques Abitbol, MD
n LETTERS TO THE EDITOR 
T. Craig Derian, MD
Current Concepts
n INVITED REVIEW
Is there a Future for Nucleus Pulposus Replacement 
Russel C. Huang, MD
n CURVE/COUNTERCURVE
ACDF: Inpatient or Outpatient? 
Alexander J. Ghanayem, MD: Kenneth S. Yonemura, MD; Jeffrey C. Wang, MD
n LITERATURE REVIEW
New from the Journals 
Paul M. Arnold, MD, FACS; Edward Teng, BS; Jonathan N. Grauer, MD; Alexander R. Vaccaro, MD
n ABSTRACT REVIEW
NASS Annual Meeting Abstracts 
Michael Schaufele, MD; Scott Boden, MD
Socioeconomics & Politics
n ELECTRONIC TECHNOLOGY
Collaborative Knowledge Networks 
Darrel S. Brodke, MD; Paul J. Slosar, MD; Jim A. Youssef, MD
n PRACTICE MANAGEMENT
Physician Experiences with Phone Tree Systems 
Robert Takacs, MD; Vincent Gaspar-Yoo, MD
n CODING Q & A
Cervical Reconstruction Coding 
NASS Operative Coding Committee
n REGULATORY POLICY
Five-Year Review Update 
Charles Mick, MD
n ETHICAL/LEGAL
NASS Code of Ethics Expanded to Cover Industry Relationships 
Stan Herring, MD
n ADVOCACY/LEGISLATIVE AFFAIRS/PAC
Back the PAC 
Tom Faciszewski, MD
NASS News 
Special Booths and Services at Annual Meeting
Philadelphia-area Sites of Interest unfold on NASS Tours
Team Up with NASS in Suporting Spine Research