Adherence to the Obeid coronal malalignment classification and a residual malalignment below 20 mm can improve surgical outcomes in adult spine deformity surgery
European Spine Journal, vol. 32, pp. 3673–3680
Abstract
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.
Authors 13
-
Universitätsklinikum Aachen · RWTH Aachen University
Affiliation as printed
Department of Orthopaedics and Trauma Surgery, RWTH Uniklinik Aachen, Pauwelsstrasse 30, 52074, Aachen, Germany. Alice.baroncini@gmail.com
Department of Orthopaedics and Trauma Surgery, RWTH Uniklinik Aachen, Pauwelsstrasse 30, 52074, Aachen, Germany
-
Hôpital Pellegrin · Centre Hospitalier Universitaire de Caen Normandie
Affiliation as printed
Department of Neurosurgery, Caen University Hospital, Caen, France
Spine Surgery Unit 1, Bordeaux University Pellegrin Hospital, Bordeaux, France
-
King Faisal Specialist Hospital & Research Centre
Affiliation as printed
Spine Surgery Department, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
-
University of Virginia Health System
Affiliation as printed
Department of Neurological Surgery, University of Virginia Health System, Charlottesville, VA, USA
-
Affiliation as printed
Spine Surgery Unit 1, Bordeaux University Pellegrin Hospital, Bordeaux, France
-
Vall d'Hebron Hospital Universitari
Affiliation as printed
Spine Surgery Unit, Vall D'Hebron Hospital, Barcelona, Spain
-
Affiliation as printed
Spine Surgery Unit, Hospital Universitario La Paz, Madrid, Spain
-
Affiliation as printed
Schulthess Klinik, Zurich, Switzerland
-
Affiliation as printed
Spine Center, Acibadem University School of Medicine, Istanbul, Turkey
-
Affiliation as printed
Department of Orthopaedic Surgery and Musculoskeletal Medicine, Christchurch School of Medicine, University of Otago, Christchurch, New Zealand
-
Affiliation as printed
Department of Spine Surgery, Mater Private Hospital, Dublin, Ireland
-
Affiliation as printed
ELSAN, Polyclinique Jean Villar, Brugge Cedex, France
Spine Surgery Unit 1, Bordeaux University Pellegrin Hospital, Bordeaux, France
-
Affiliation as printed
ELSAN, Polyclinique Jean Villar, Brugge Cedex, France
Spine Surgery Unit 1, Bordeaux University Pellegrin Hospital, Bordeaux, France
Cited by 13 stored of 13
13 results
No patents citing this paper on Lens.org (checked 2026-10-06).