Department of Orthopedic Surgery, SUNY Upstate Medical University, Syracuse, NY

Financial Disclosure: The authors declare no conflicts of interests with this manuscript. This research received no specific grant from any funding agency in public, commercial, or not-for-profit sectors. Outside of the submitted work, Author 1 has nothing to disclose; Author 2 is a paid consultant/paid presenter/stock or stock options for 4-Web, research grants for Abryx, AO Foundation, Cerapedics, DePuy Spine, Empirical Spine, Innovasis, Medtronic, Spinal Kinetics, Vertebral Technologies, paid consultant for DePuy Spine, stock or stock options for Expanding Innovations and Prosydian, and advisory boards for Vertiflex, Prosydian and Innovasis; Author 3 is a paid consultant for Stryker Spine and research grants for Vertiflex.

Correspondence to Richard A. Tallarico, MD, Department of Orthopedic Surgery, SUNY Upstate Medical University, 750 E. Adams St., Syracuse, NY 13210 Tel: +1-315-464-4472; fax: +1-315-464-5223; e-mail: [email protected].