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AO Spine-DGOU Osteoporotic Fracture Classification System: Internal Validation by the AO Spine Knowledge Forum Trauma

Research Authors
Julian Scherer, Andrei Joaquim, Alex Vaccaro, Rishi Kanna, Mohammad El-Sharkawi, Masahiko Takahata, Mohamed M Aly, Gaston Camino-Willhuber, Ulrich Spiegl, Cumhur Oner, Jose A Canseco, Ratko Yurac, Lorin Michael Benneker, Eugen Cezar Popescu, Richard Brans
Research Date
Research Journal
Global Spine Journal
Research Publisher
Sage Publications
Research Website
https://journals.sagepub.com/doi/full/10.1177/21925682241288187
Research Year
2024
Research Abstract

Study Design

Cross-sectional survey.

Objectives

Injury 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.

Methods

23 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.

Results

A total of 1386 ratings (21 raters) were performed. The overall inter-rater agreement was moderate with a combined …