2026-04-13T07:34:59Zhttps://recercat.cat/oai/request

oai:recercat.cat:11351/104622025-10-24T10:23:27Zcom_2072_378070com_2072_378040col_2072_378092

Adherence to the Obeid coronal malalignment classification and a residual malalignment below 20 mm can improve surgical outcomes in adult spine deformity surgery Baroncini, Alice Frechon, Paul bourghli, anouar Smith, Justin S. Pellise, Ferran Larrieu, Daniel Columna vertebral - Malformacions - Cirurgia Cirurgia - Complicacions DISEASES::Musculoskeletal Diseases::Bone Diseases::Spinal Diseases::Spinal Curvatures Other subheadings::Other subheadings::Other subheadings::/surgery DISEASES::Pathological Conditions, Signs and Symptoms::Pathologic Processes::Postoperative Complications ENFERMEDADES::enfermedades musculoesqueléticas::enfermedades óseas::enfermedades de la columna vertebral::desviaciones de la columna vertebral Otros calificadores::Otros calificadores::Otros calificadores::/cirugía ENFERMEDADES::afecciones patológicas, signos y síntomas::procesos patológicos::complicaciones posoperatorias Adult spinal deformity; Coronal alignment; Mechanical complications Deformidad espinal del adulto; Alineación coronal; Complicaciones mecánicas Deformitat espinal de l'adult; Alineació coronal; Complicacions mecàniques Purpose Coronal balance is a major factor impacting the surgical outcomes in adult spinal deformity (ASD). The Obeid coronal malalignment (O-CM) classification has been proposed to improve the coronal alignment in ASD surgery. Aim of this study was to investigate whether a postoperative CM < 20 mm and adherence to the O-CM classification could improve surgical outcomes and decrease the rate of mechanical failure in a cohort of ASD patients. Methods Multicenter retrospective analysis of prospectively collected data on all ASD patients who underwent surgical management and had a preoperative CM > 20 mm and a 2-year follow-up. Patients were divided in two groups according to whether or not surgery had been performed in adherence to the guidelines of the O-CM classification and according to whether or not the residual CM was < 20 mm. The outcomes of interest were radiographic data, rate of mechanical complications and Patient-Reported Outcome Measures. Results At 2 years, adherence to the O-CM classification led to a lower rate of mechanical complications (40 vs. 60%). A coronal correction of the CM < 20 mm allowed for a significant improvement in SRS-22 and SF-36 scores and was associated with a 3.5 times greater odd of achieving the minimal clinical important difference for the SRS-22. Conclusion Adherence to the O-CM classification could reduce the risk of mechanic complications 2 years after ASD surgery. Patients with a residual CM < 20 mm showed better functional outcomes and a 3.5 times greater odd of achieving the MCID for the SRS-22 score. Open Access funding enabled and organized by Projekt DEAL. None. 2025-10-24T10:23:27Z 2025-10-24T10:23:27Z 2025-10-24T10:23:27Z 2023-10-18T07:33:07Z 2023-10-18T07:33:07Z 2023-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/11351/10462 European Spine Journal;32 https://doi.org/10.1007/s00586-023-07831-0 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Springer Scientia