The Subaxial Cervical AO Spine Injury Score
Canseco, Jose A.; Schroeder, Gregory D.; Paziuk, Taylor M.; Karamian, Brian A.; Kandziora, Frank; Vialle, Emiliano N.; Oner, F. Cumhur; Schnake, Klaus J.; Dvorak, Marcel F.; Chapman, Jens R.; Benneker, Lorin M.; Rajasekaran, Shanmuganathan; Kepler, Christopher K.; Vaccaro, Alexander R.
(2022) Global Spine Journal, volume 12, issue 6, pp. 1066 - 1073
(Article)
Abstract
Study Design: Global cross-sectional survey. Objective: To develop an injury score for the AO Spine Subaxial Cervical Spine Injury Classification System. Methods: Respondents numerically graded each variable within the classification system for severity. Based on the results, and with input from the AO Spine Trauma Knowledge Forum, the Subaxial Cervical
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AO Spine Injury Score was developed. Results: An A0 injury was assigned an injury score of 0, A1 a score of 1, and A2 a score of 2. Given the significant increase in severity, A3 was given a score of 4. Based on equal severity assessment, A4 and B1 were both assigned a score of 5. B2 and B3 injuries were assigned a score of 6. Unstable C-type injuries were given a score of 7. Stable F1 injuries were assigned a score of 2, with a 2-point increase for F2 injuries. Likewise, F3 injuries received a score of 5, whereas more unstable F4 injuries a score of 7. Neurologic status severity rating scores increased stepwise, with scores of 0 for N0, 1 for N1, and 2 for N2. Consistent with the Thoracolumbar AO Spine Injury Score, N3 (incomplete) and N4 (complete) injuries were given a score of 4. Finally, case-specific modifiers M1 (PLC injury) received a score of 1, while M2 (critical disc herniation) and M3 (spine stiffening disease) received a score of 4. Conclusions: The Subaxial Cervical AO Spine Injury Score is an easy-to-use metric that can help develop a surgical algorithm to supplement the AO Spine Subaxial Cervical Spine Injury Classification System.
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Keywords: AO Spine Subaxial Cervical Spine Injury Classification System, cervical spine trauma, injury score, Clinical Neurology, Surgery, Orthopedics and Sports Medicine, Journal Article
ISSN: 2192-5682
Publisher: SAGE Publications Inc.
Note: Funding Information: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study was organized and funded by AO Spine through the AO Spine Knowledge Forum Trauma, a focused group of international Trauma experts. The AO Spine Injury Classification Systems were developed and funded by AO Spine through the AO Spine Knowledge Forum Trauma, a focused group of international spine trauma experts. AO Spine is a clinical division of the AO Foundation, which is an independent medically-oriented not-for-profit organization. Funding Information: Study support was provided directly through the AO Spine Research Department and AO Innovation Translation Center. Figure 1 provided by © AO Foundation, Switzerland with permission. The authors would like to thank Olesja Hazenbiller (AO Spine) for her editorial and administrative assistance, and Christian Knoll and Cordula Blohm (AO Innovation Translation Center) for their support with data collection. Funding Information: Study support was provided directly through the AO Spine Research Department and AO Innovation Translation Center. Figure 1 provided by © AO Foundation, Switzerland with permission. The authors would like to thank Olesja Hazenbiller (AO Spine) for her editorial and administrative assistance, and Christian Knoll and Cordula Blohm (AO Innovation Translation Center) for their support with data collection. The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study was organized and funded by AO Spine through the AO Spine Knowledge Forum Trauma, a focused group of international Trauma experts. The AO Spine Injury Classification Systems were developed and funded by AO Spine through the AO Spine Knowledge Forum Trauma, a focused group of international spine trauma experts. AO Spine is a clinical division of the AO Foundation, which is an independent medically-oriented not-for-profit organization. Publisher Copyright: © The Author(s) 2020.
(Peer reviewed)
