Assessment of malalignment at early stage in adolescent idiopathic scoliosis: a longitudinal cohort study.

Autor: Langlais T; Institut de Biomécanique Humaine Georges Charpak, Arts et Métiers, HESAM Université, Paris, France. tristanlanglais@yahoo.fr.; Service Orthopédie et Traumatologie, Hôpital des Enfants, Purpan, Toulouse Université, Toulouse, France. tristanlanglais@yahoo.fr., Vergari C; Institut de Biomécanique Humaine Georges Charpak, Arts et Métiers, HESAM Université, Paris, France., Rougereau G; Service Orthopédie et Traumatologie, Hôpital Pitié-Salpêtrière, Sorbonne Université, APHP, Paris, France., Gaume M; Service Orthopédie et Traumatologie, Hôpital Necker Enfants Malades, Paris cité Université, APHP, Paris, France., Gajny L; Institut de Biomécanique Humaine Georges Charpak, Arts et Métiers, HESAM Université, Paris, France., Abelin-Genevois K; Department of Orthopaedic Surgery and Children Conservative Treatment, Croix-Rouge Française. Centre Médico-Chirurgical Et de Réadaptation Des Massues, Lyon, France., Bernard JC; Department of Orthopaedic Surgery and Children Conservative Treatment, Croix-Rouge Française. Centre Médico-Chirurgical Et de Réadaptation Des Massues, Lyon, France., Hu Z; SH Ho Scoliosis Research Laboratory, Department of Orthopaedics and Traumatology, Faculty of Medicine, The Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China., Cheng JCY; SH Ho Scoliosis Research Laboratory, Department of Orthopaedics and Traumatology, Faculty of Medicine, The Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China., Chu WCW; Department of Imaging and Interventional Radiology, Faculty of Medicine, The Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China., Assi A; Institut de Biomécanique Humaine Georges Charpak, Arts et Métiers, HESAM Université, Paris, France.; Laboratory of Biomechanics and Medical Imaging, Faculty of Medicine, Joseph University of Beirut, SaintBeirut, Lebanon., Karam M; Laboratory of Biomechanics and Medical Imaging, Faculty of Medicine, Joseph University of Beirut, SaintBeirut, Lebanon., Ghanem I; Laboratory of Biomechanics and Medical Imaging, Faculty of Medicine, Joseph University of Beirut, SaintBeirut, Lebanon.; Department of Orthopedic Surgery, Hotel-Dieu de France Hospital, Saint Joseph University, Beirut, Lebanon., Bassani T; IRCCS Istituto Ortopedico Galeazzi, Milan, Italy., Galbusera F; Spine Center, Schulthess Clinic, Zurich, Switzerland., Sconfienza LM; IRCCS Istituto Ortopedico Galeazzi, Milan, Italy.; Dipartimento di Scienze Biomediche per la Salute, Università Degli Studi di Milano, Milan, Italy., Brayda-Bruno M; IRCCS Istituto Ortopedico Galeazzi, Milan, Italy., Courtois I; Unite Rachis, CHU - Hopital Bellevue, Saint-Etienne, France., Ebermeyer E; Unite Rachis, CHU - Hopital Bellevue, Saint-Etienne, France., Vialle R; Sorbonne Université, Service Orthopédie et Traumatologie, Hôpital A. Trousseau, APHP, Paris, France., Dubousset J; Institut de Biomécanique Humaine Georges Charpak, Arts et Métiers, HESAM Université, Paris, France., Skalli W; Institut de Biomécanique Humaine Georges Charpak, Arts et Métiers, HESAM Université, Paris, France.
Jazyk: angličtina
Zdroj: European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society [Eur Spine J] 2024 Apr; Vol. 33 (4), pp. 1665-1674. Date of Electronic Publication: 2024 Feb 26.
DOI: 10.1007/s00586-024-08178-w
Abstrakt: Introduction: Our objective was to assess abnormalities of the odontoid-hip axis (OD-HA) angle in a mild scoliotic population to determine whether screening for malalignment would help predict the distinction between progressive and stable adolescent idiopathic scoliosis (AIS) at early stage.
Materials and Methods: All patients (non-scoliotic and AIS) underwent a biplanar X-ray between 2013 and 2020. In AIS, inclusion criteria were Cobb angle between 10° and 25°; Risser sign lower than 3; age higher than 10 years; and no previous treatment. A 3D spine reconstruction was performed, and the OD-HA was computed automatically. A reference corridor for OD-HA values in non-scoliotic subjects was calculated as the range [5th-95th percentiles]. A severity index, helping to distinguish stable and progressive AIS, was calculated and weighted according to the OD-HA value.
Results: Eighty-three non-scoliotic and 205 AIS were included. The mean coronal and sagittal OD-HA angles in the non-scoliotic group were 0.2° and -2.5°, whereas in AIS values were 0.3° and -0.8°, respectively. For coronal and sagittal OD-HA, 27.5% and 26.8% of AIS were outside the reference corridor compared with 10.8% in non-scoliotic (OR = 3.1 and 3). Adding to the severity index a weighting factor based on coronal OD-HA, for thoracic scoliosis, improved the positive predictive value by 9% and the specificity by 13%.
Conclusion: Analysis of OD-HA suggests that AIS patients are almost three times more likely to have malalignment compared with a non-scoliotic population. Furthermore, analysis of coronal OD-HA is promising to help the clinician distinguish between stable and progressive thoracic scoliosis.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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