The thoracolumbar AOSpine injury score

  • Study Design: Survey of 100 worldwide spine surgeons. Objective: To develop a spine injury score for the AOSpine Thoracolumbar Spine Injury Classification System. Methods: Each respondent was asked to numerically grade the severity of each variable of the AOSpine Thoracolumbar Spine Injury Classification System. Using the results, as well as limited input from the AOSpine Trauma Knowledge Forum, the Thoracolumbar AOSpine Injury Score was developed. Results: Beginning with 1 point for A1, groups A, B, and C were consecutively awarded an additional point (A1, 1 point; A2, 2 points; A3, 3 points); however, because of a significant increase in the severity between A3 and A4 and because the severity of A4 and B1 was similar, both A4 and B1 were awarded 5 points. An uneven stepwise increase in severity moving from N0 to N4, with a substantial increase in severity between N2 (nerve root injury with radicular symptoms) and N3 (incomplete spinal cord injury) injuries, was identified. Hence, each grade of neurologic injury was progressively given an additional point starting with 0 points for N0, and the substantial difference in severity between N2 and N3 injuries was recognized by elevating N3 to 4 points. Finally, 1 point was awarded to the M1 modifier (indeterminate posterolateral ligamentous complex injury). Conclusion: The Thoracolumbar AOSpine Injury Score is an easy-to-use, data-driven metric that will allow for the development of a surgical algorithm to accompany the AOSpine Thoracolumbar Spine Injury Classification System.

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Author:Christopher K. Kepler, Alexander R. VaccaroORCiDGND, Gregory D. SchroederORCiD, John D. Koerner, Luiz Roberto Vialle, Bizhan Aarabi, Shanmuganathan RajasekaranORCiD, Carlo Bellabarba, Jens R. Chapman, Frank KandzioraGND, Klaus J. SchnakeORCiDGND, Marcel F. Dvorak, Max Reinhold, F. Cumhur ÖnerGND
Pubmed Id:
Parent Title (English):Global spine journal
Place of publication:Stuttgart
Document Type:Article
Year of Completion:2015
Date of first Publication:2015/09/29
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2019/07/15
Tag:AOSpine; AOSpine injury score; TL AOSIS; thoracolumbar spine injury classification system; thoracolumbar trauma
Page Number:6
First Page:329
Last Page:334
This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License ( which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access page (
Institutes:Medizin / Medizin
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Licence (German):License LogoCreative Commons - Namensnennung-Nicht kommerziell-Keine Bearbeitung 3.0