Accepted for Publication: February 14, 2014.
Published Online: October 8, 2014. doi:10.1001/jamasurg.2014.716.
Study concept and design: Ament, Yang, Kim.
Acquisition, analysis, or interpretation of data: Ament, Yang, Nunley, Stone.
Drafting of the manuscript: Ament, Yang.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Ament, Yang.
Obtained funding: Ament, Nunley, Stone.
Study supervision: Ament, Kim.
Conflict of Interest Disclosures: Dr Ament served as a consultant for LDR Medical, which provided funding to support data analysis and preparation of the manuscript. Mr Yang provided statistical support and works directly for Dr Ament. Dr Stone received institutional funding from LDR Medical for cost-data collection for this project and institutional funding for the randomized clinical trial and other Mobi-C–related research. Dr Nunley received institutional funding from LDR Medical for cost-data collection for this manuscript. He is a patent holder for K2M and LDR Spine (specifically for the ROI-A Anterior lumbar interbody fusion cage). Dr Kim receives royalties for LDR Spine.
Funding/Support: This work was supported in part by LDR Medical.
Role of the Funder/Sponsor: LDR Medical had a role in the collection, management, analysis, and interpretation of the data; preparation, review, and approval of the manuscript; and decision to submit the manuscript for publication, but not in the design and conduct of the study.
Correction: This article was corrected online November 4, 2014, for typographical errors in Table 1 and in the Figure.