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Biplanar stereoradiography predicts pulmonary function tests in adolescent idiopathic scoliosis: a cross-sectional study

Article dans une revue avec comité de lecture
Author
BOULOUSSA, Houssam
360410 CHU Trousseau [APHP]
HAEN, Thomas-Xavier
ccSKALLI, Wafa
VIALLE, Raphaël
188248 Université Grenoble Alpes - UFR Langage, lettres et arts du spectacle, information et communication - Dpt Lettres et arts du spectacle [UGA UFR LLASIC LAS]
360410 CHU Trousseau [APHP]
ccVERGARI, Claudio
37861 Biomécanique et Pathologie Locomotrice du Cheval [BPLC]
99538 Laboratoire de biomécanique [LBM]
169802 University of Exeter
466360 Institut de Biomecanique Humaine Georges Charpak
34256 École nationale vétérinaire d'Alfort [ENVA]

URI
http://hdl.handle.net/10985/14977
DOI
10.1007/s00586-019-05940-3
Date
2019
Journal
European Spine Journal

Abstract

Purpose Various spinal and rib cage parameters measured from complex examinations were found to be correlated with preoperative pulmonary function tests (PFT). The aim was to investigate the relationship between preoperative rib cage parameters and PFT using biplanar stereoradiography in patients with severe adolescent idiopathic scoliosis. Methods Fifty-four patients, 45 girls and nine boys, aged 13.8 ± 1.2 years, with Lenke 1 or 2 thoracic scoliosis (> 50°) requiring surgical correction were prospectively included. All patients underwent preoperative PFT and low-dose biplanar X-rays. The following data were collected: forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), FEV1/FVC ratio, residual volume, slow vital capacity (SVC), total lung capacity (TLC), rib cage volume (RCV), maximum rib hump, maximum width, mean thoracic index, spinal penetration index, apical vertebral rotation, main curve Cobb angle (MCCA), T4–T12 kyphosis. The primary outcome was the relationship between rib cage parameters and PFT. The secondary outcome was the relationship between rib cage parameters and spine parameters. Data were analyzed using Spearman’s rank test. A multivariable regression analysis was performed to compare PFTs and structural parameters. Significance was set at α = 0.05. Results The mean MCCA was 68.7° ± 16.7°. RCV was highly correlated with all pulmonary capacities: TLC (r = 0.76, p < 0.0001), SVC (r = 0.78, p < 0.0001) and FVC (r = 0.77, p < 0.0001). RCV had a low correlation with FEV1/FVC (r = − 0.34, p = 0.014). SPI was not correlated with any pulmonary parameters. Conclusion Rib cage volume measured by biplanar stereoradiography may represent a prediction tool for PFTs.

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