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3D external shape analysis and barycentremetry can provide early signs of progression in adolescent idiopathic scoliosis

Article dans une revue avec comité de lecture
Author
ccLANGLAIS, Tristan
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
1153000 Pôle Enfants [CHU Toulouse]
ccVERGARI, Claudio
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
ccMAINARD, Nicolas
360410 CHU Trousseau [APHP]
DU CLUZEL, Xavier
414766 Hôpital Necker - Enfants Malades [AP-HP]
ccBAUDOUX, Matthieu
414766 Hôpital Necker - Enfants Malades [AP-HP]
503981 Croix-Rouge française = French Red Cross
ccGAJNY, Laurent
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
ABELIN-GENEVOIS, Kariman
503981 Croix-Rouge française = French Red Cross
BERNARD, Jean-Claude
353860 Centre Hospitalier Lyon Sud [CHU - HCL] [CHLS]
503981 Croix-Rouge française = French Red Cross
HU, Zongshan
93116 The Chinese University of Hong Kong [Hong Kong] [CUHK]
CHENG, Jack Chun-Yiu
93116 The Chinese University of Hong Kong [Hong Kong] [CUHK]
CHU, Winnie Chiu-Wing
93116 The Chinese University of Hong Kong [Hong Kong] [CUHK]
ASSI, Ayman
301405 Université Saint-Joseph de Beyrouth [USJ]
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
KARAM, Mohamad
301405 Université Saint-Joseph de Beyrouth [USJ]
ccGHANEM, Ismat
301405 Université Saint-Joseph de Beyrouth [USJ]
BASSANI, Tito
1004551 IRCCS Istituto Ortopedico Galeazzi
ccGALBUSERA, Fabio
ccSCONFIENZA, Luca Maria
300694 Università degli Studi di Milano = University of Milan [UNIMI]
1004551 IRCCS Istituto Ortopedico Galeazzi
BRAYDA-BRUNO, Marco
573150 IRCCS Istituto Nazionale dei Tumori [Milano]
1004551 IRCCS Istituto Ortopedico Galeazzi
COURTOIS, Isabelle
51335 Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] [CHU ST-E]
EBERMEYER, Eric
51335 Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] [CHU ST-E]
VIALLE, Raphaël
183200 Hôpital Trousseau
DUBOUSSET, Jean
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
ccSKALLI, Wafa
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]

URI
http://hdl.handle.net/10985/26197
DOI
10.1007/s43390-024-01001-y
Date
2024-11
Journal
Spine Deformity

Abstract

Purpose Our objective was to analysis the barycentremetry, obtained from the external envelope reconstruction of biplanar radiographs, in adolescent idiopathic scoliosis (AIS) and to determine whether assessing would help predict the distinction between progressive and stable AIS at the early stage. Methods A retrospective study with a multicentre cohort of 205 AIS was conducted. All AIS underwent a biplanar X-ray between 2013 and 2020. 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 barycentremetry parameters were computed, i.e., the center of mass position at the apex and the axial torque at the apex, the upper and lower junction. A severity index, helping to distinguish stable and progressive AIS, was computed on the first radiograph, and weighted according to these parameters. A clinical and radiographic monitoring determined if AIS were classified such a stable or progressive scoliosis. Results One hundred and sixty-two AIS were included (i.e., 87 were classified as stable and 75 as progressive). The apex center of mass position was different between the stable and progressive AIS groups (6 mm, SD = 4 mm for the whole cohort; 5 mm, SD = 4 mm for stable AIS versus 7 mm, SD = 4 mm for progressive AIS; p = 0.02). In AIS thoracic, the specificity and positive predictive value of the severity index increased by 19% and 16%, respectively, by adding the apex vertebral axial torque. Conclusion Early assessment of the external envelope from biplanar X-ray reconstruction of idiopathic scoliosis showed that the apex centre of mass position was significantly different between progressive and stable scoliosis. The inclusion of the axial torque of the apex vertebra in the severity index is promising to help the clinician distinguish between stable and progressive thoracic AIS at an early stage.

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