SPINE An International Journal for the study of the spine Publish Ahead of Print DOI : 10.1097/BRS.0000000000002144 Principal radiographic characteristics for cervical spinal deformity: A health-related quality of life analysis Hongda Bao MD/PhD 1,2 , Jeffrey Varghese BS 2 , Renaud Lafage MS 2 , Barthelemy Liabaud MD 2 , Bassel Diebo MD 2 , Subaraman Ramchandran MBBS 3 , Louis Day MD 3 , Cyrus Jalai BS 3 , Dana Cruz MD 3 , Thomas Errico MD 3 , Themistocles Protopsaltis MD 3 , Peter Passias MD 3 , Aaron BucklandMD FRACS 3 , Yong Qiu MD 1 , Frank Schwab MD 2 , Virginie Lafage PhD 2 Author affiliation: 1: Nanjing Drum Tower Hospital, Nanjing University School of Medicine, Nanjing, China 2: Hospital for Special Surgery, New York, USA 3: Hospital for Joint Diseases at NYU Langone Medical Center, New York, USA 4: Washington University, St. Louis, USA Corresponding author: Virginie Lafage, PhD, Hospital for Special Surgery 535 East 70th Street, Belaire 4-E New York, New York 10021 Phone: (917) 260-4601 Cell: (646) 912-5820 Fax: (917) 260-4750 Virginie.lafage@gmail.com Acknowledgement: September 29, 2016 Revise: December 21, 2016 Accept: January 24, 2017 The manuscript submitted does not contain information about medical device(s)/drug(s). No funds were received in support of this work. Relevant financial activities outside the submitted work: consultancy, grants, royalties, payment for lectures, payment for development of educational presentations, stocks. Copyright © 2017 Wolters Kluwer Health, Inc. Unauthorized reproduction of this article is prohibited.