Browsing by Author "Yurac, Ratko"

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    A comparative agreement evaluation of two subaxial cervical spine injury classification systems: the AOSpine and the Allen and Ferguson schemes
    (2016) Urrutia Escobar, Julio Octavio; Zamora Helo, Tomás; Campos Daziano, Mauricio Andrés; Yurac, Ratko; Palma Munita, Joaquín Hernán
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    An independent inter- and intraobserver agreement assessment of the AOSpine sacral fracture classification system
    (2021) Urrutia, Julio; Meissner-Haecker, Arturo; Astur, Nelson; Valencia, Manuel; Yurac, Ratko; Camino-Willhuber, Gaston; Valacco, Marcelo
    BACKGROUND CONTEXT: The AOSpine sacral classification scheme was recently described. It demonstrated substantial interobserver and excellent intraobserver agreement in the study describing it; however, an independent assessment has not been performed.
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    An Independent Inter- and Intraobserver Agreement Evaluation of the AOSpine Subaxial Cervical Spine Injury Classification System
    (2017) Urrutia Escobar, Julio Octavio; Zamora Helo, Tomás; Yurac, Ratko; Campos, M.; Palma Munita, Joaquín Hernán
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    Inter- and intra-observer agreement using the new AOSpine sacral fracture classification, with a comparison between spine and pelvic trauma surgeons
    (2022) Meissner-Haecker, Arturo; Diaz-Ledezma, Claudio; Klaber, Ianiv; Zamora, Tomas; Valencia, Manuel; Camino-Willhuber, Gaston; Astur, Nelson; Yurac, Ratko; Valacco, Marcelo; Urrutia, Julio
    Background: Sacral fractures treatment frequently involves both spine and pelvic trauma surgeons; therefore, a consistent communication among surgical specialists is required. We independently assessed the new AOSpine sacral fracture classification's agreement from the perspective of spine and pelvic trauma surgeons. Methods: Complete computerized tomography (CT) scans of 80 patients with sacral fractures were selected and classified using the new AOSpine sacral classification system by six spine surgeons and three pelvic trauma surgeons. After four weeks, the 80 cases were presented and reassessed by the same raters in a new random sequence. The Kappa coefficient ( K) was used to measure the inter-and intra-observer agreement. Results: The inter-observer agreement considering the fracture severity types (A, B, or C) was substantial for spine surgeons ( K= 0.68 [0.63 - 0.72]) and pelvic trauma surgeons ( K= 0.74 (0.64 - 0.84). Regarding the subtypes, both groups achieved moderate agreement with K= 0.52 (0.49 - 0.54) for spine surgeons and K= 0.51 (0.45 - 0.57) for pelvic trauma surgeons. The intra-observer agreement considering the fracture types was substantial for spine surgeons ( K= 0.74 [0.63 - 0.75]) and almost perfect for pelvic trauma surgeons ( K= 0.84 [0.74 - 0.93]). Concerning the subtypes, both groups achieved substantial agreement with, K= 0.61 (0.56 - 0.67) for spine surgeons and K= 0.68 (0.62 - 0.74) for pelvic trauma surgeons. Conclusion: This classification allows an adequate communication for spine surgeons and pelvic trauma surgeons at the fracture severity type, but the agreement is only moderate at the subtype level. Future prospective studies are required to evaluate whether this classification allows for treatment recommendations and establishing prognosis in patients with sacral fractures. @ 2021 Elsevier Ltd. All rights reserved.
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    Reliability Evaluation of the New AO Spine-DGOU Classification for Osteoporotic Thoracolumbar Fractures
    (2022) Quinteros, Guisela; Cabrera, Juan P.; Urrutia, Julio; Carazzo, Charles A.; Guiroy, Alfredo; Marre, Bartolome; Joaquim, Andrei; Yurac, Ratko
    OBJECTIVES: To perform an interobserver and intra- observer agreement evaluation of the new AO Spine-DGOU classification system for osteoporotic thoracolumbar fractures (OFc).