RELIABILITY OF THE AO CLASSIFICATION OF THORACOLUMBAR FRACTURES COMPARED TO TLICS AND MAGERL

ABSTRACT Objective: To test the reliability of the new AO/2013 classification compared with AO/Magerl and TLICS. Methods: Four spine surgeons retrospectively and blindly evaluated imaging and clinical data from 98 patients with thoracolumbar fractures. Results: Using the Kappa coefficient, we obtained the best reproducibility for the AO/2013 classification compared to the other two, represented by Kappa coefficient of 0.690. We could also obtain, with good reproducibility among the evaluators (Kappa 0.690), the most common subtypes of AO/2013 classification with indication for surgery. Conclusion: We believe that the new AO/2013 classification has proven to be a good communication tool among spine surgeons with good reproducibility, but more studies should be conducted in several centers in order to be consolidated and so that the prognosis between the types of injury is better understood.摘要 目的：对比新型AO/2013分型（AO/2013 classification）与AO/Magerl分型（AO/Magerl）及TLICS分型（TLICS）的可靠性。 方法：4名脊柱外科医师采用盲法，对98例胸腰椎骨折患者的影像学及临床资料进行回顾性评估。 结果：采用Kappa系数（Kappa coefficient）分析后显示，相较于其余两种分型，新型AO/2013分型具有最佳的评估重现性，其Kappa系数为0.690。本研究同时发现，AO/2013分型中最常见的手术适应证亚型在评估者间亦具备良好的重现性（Kappa系数0.690）。 结论：本研究证实，新型AO/2013分型可作为脊柱外科医师间有效的沟通工具，具备良好的评估重现性；但仍需在多中心开展更多研究以进一步完善该分型，并更好地明确不同损伤类型的预后情况。