AO Spine-DGOU Osteoporotic Fracture Classification System: Internal Validation by the AO Spine Knowledge Forum Trauma.
Publication/Presentation Date
5-1-2025
Abstract
Study DesignCross-sectional survey.ObjectivesInjury classifications are important tools to identify fracture patterns, guide treatment-decisions and aid to identify optimal treatment plans. The AO Spine-DGOU Osteoporotic Fracture (OF) classification system was developed, and the aim of this study was to assess the reliability of this new classification system.Methods23 Members of the AO Spine Knowledge Forum Trauma participated in the validation process. Participants were asked to rate 33 cases according to the OF classification at 2 time points, 4 weeks apart (assessment 1 and 2). The kappa statistic (κ) was calculated to assess inter-observer reliability and intra-rater reproducibility. The gold master key for each case was determined by approval of at least 5 out of 7 members of the DGOU.ResultsA total of 1386 ratings (21 raters) were performed. The overall inter-rater agreement was moderate with a combined kappa statistic for the OF classification of 0.496 in assessment 1 and 0.482 in assessment 2. The combined percentage of correct ratings (compared to gold-standard) in assessment 1 was 71.4% and 67.4% in assessment 2. The average intra-rater reproducibility was substantial (κ = 0.74, median 0.76, range 0.55 to 1.00, SD 0.13) for the assessed fracture types.ConclusionsThe assessed overall inter-rater reliability was moderate and substantial in some instances. The average intra-rater reproducibility is substantial. It seems that appropriate training of the classification system can enhance inter- and intra-rater reliability.
Volume
15
Issue
4
First Page
2152
Last Page
2157
ISSN
2192-5682
Published In/Presented At
Scherer, J., Joaquim, A., Vaccaro, A., Kanna, R., El-Sharkawi, M., Takahata, M., Aly, M. M., Camino-Willhuber, G., Spiegl, U., Oner, C., Canseco, J. A., Yurac, R., Benneker, L. M., Popescu, E. C., Bransford, R., Chhabra, H. S., Kandziora, F., Neva, M. H., & Schnake, K. J. (2025). AO Spine-DGOU Osteoporotic Fracture Classification System: Internal Validation by the AO Spine Knowledge Forum Trauma. Global spine journal, 15(4), 2152–2157. https://doi.org/10.1177/21925682241288187
Disciplines
Business Administration, Management, and Operations | Health and Medical Administration | Management Sciences and Quantitative Methods
PubMedID
39327898
Department(s)
Administration and Leadership
Document Type
Article