Shear Wave Elastography can evaluate Annulus Fibrosus Alteration in Adolescent Scoliosis
2018
Langlais, T | Vergari, C | Pietton, R | Dubousset, J | Skalli, W | Vialle, R | Institut de Biomécanique Humaine Georges Charpak (IBHGC) ; Université Sorbonne Paris Nord-Arts et Métiers Sciences et Technologies | Biomécanique et Pathologie Locomotrice du Cheval (BPLC) ; École nationale vétérinaire d'Alfort (ENVA)-Institut National de la Recherche Agronomique (INRA) | École nationale vétérinaire d'Alfort (ENVA) | Laboratoire de biomécanique (LBM) ; Université Paris 13 (UP13)-Université Sorbonne Paris Cité (USPC)-Centre National de la Recherche Scientifique (CNRS) | University of Exeter | Institut de Biomecanique Humaine Georges Charpak ; Université Paris 13 (UP13)-Arts et Métiers ParisTech | Chirurgie orthopédique et pédiatrique [Hôpital de la Timone - APHM] ; Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Hôpital de la Timone [CHU - APHM] (TIMONE) | Institut de Mécanique et d'Ingénierie (I2M) ; Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Arts et Métiers Sciences et Technologies | École Nationale Supérieure d'Arts et Métiers (ENSAM) | Laboratoire de Tribologie et Dynamique des Systèmes (LTDS) ; École Centrale de Lyon (ECL) ; Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Ecole Nationale d'Ingénieurs de Saint Etienne (ENISE)-Centre National de la Recherche Scientifique (CNRS) | Chaire BiomecAM
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Show more [+] Less [-]English. ObjectivesIn vitro studies showed that annulus fibrosus lose its integrity in idiopathicscoliosis. Shear wave ultrasound elastography can be used for noninvasivemeasurement of shear wave speed (SWS) in vivo in the annulus fibrosus, aparameter related to its mechanical properties. The main aim was to assess SWSin lumbar annulus fibrosus of scoliotic adolescents and compare it to healthysubjects.MethodsSWS was measured in 180 lumbar IVDs (L3L4, L4L5, L5S1) of thirty healthyadolescents (13 yo ± 1.9) and thirty adolescent idiopathic scoliosis patients (13 yo± 2, Cobb angle: 28.8° ± 10.4°). SWS was compared between scoliosis andhealthy control group.ResultsIn healthy subjects, average SWS (all disc levels pooled) was 3.0 ± 0.3 m/swhereas, in scoliotic patients it was significantly higher at 3.5 ± 0.3 m/s (p =0.0004; Mann-Whitney test). Differences were also significant at all disc levels.No difference was observed between males and females. No correlation wasfound with age, weight and height.ConclusionNon-invasive shear wave ultrasound is a novel method of assessment toquantitative alteration of annulus fibrosus. These preliminary results arepromising to consider shear wave elastography as a biomechanical marker forassessment of idiopathic scoliotic.
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