Balance, barycentremetry and external shape analysis in idiopathic scoliosis: What can the physician expect from it?
Article dans une revue avec comité de lecture
Objective: Our objective was to establish a corridor of normality for the external shape 3D parameters and then to assess these variables in adolescent idiopathic scoliosis (AIS). Methods: Adolescent with mild and severe AIS were included prospectively, as well as a control group of asymptomatic subjects. A quasi‐automatic 3D reconstruction of the spine and manual 3D reconstruction of the external envelope was performed from biplanar radiography. The center of mass position, the axial intersegmental moment resulting at the apex and junctional vertebrae, and the coronal trunk balance were automatically computed. A normality corridor of asymptomatic subjects was calculated as the range [5th-95th percentiles] for external shape parameters at each vertebral level. Results: Forty-one asymptomatic subjects (19 females; 22 males; 21 yo, SD=4) and sixty AIS (56 females; 4 males; 13 years old, SD=1.9; 30 mild and 30 severe; 34 thoracic curves and 26 thoraco-lumbar or lumbar curves) were included. All parameters based on the external shape showed differences between AIS and controls, as well as between mild and severe scoliosis. For instance, the intersegmental moment applied to the upper junctional vertebra was above the 95th percentile of controls in 70% of AIS patient. The percentage of severe patients showing parameters higher than the normality corridor was significantly higher than mild patients (p<0.0001). Conclusions: The analysis of center of mass, vertebral intersegmental moment and coronal trunk balance parameters appear to be relevant in characterizing the 3D deformity of adolescent idiopathic scoliosis. The upper junctional intersegmental moment seems to be able to distinguish the different stages of curvature severity.
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Quasi-automatic early detection of progressive idiopathic scoliosis from biplanar radiography: a preliminary validation Article dans une revue avec comité de lectureVERGARI, Claudio; GAJNY, Laurent; COURTOIS, Isabelle; EBERMEYER, Eric; ABELIN-GENEVOIS, Kariman; KIM, Youngwoo; LANGLAIS, Tristan; VIALLE, Raphaël; ASSI, Ayman; GHANEM, Ismat; DUBOUSSET, Jean; SKALLI, Wafa (Springer Verlag, 2019)Purpose To validate the predictive power and reliability of a novel quasi-automatic method to calculate the severity index of adolescent idiopathic scoliosis (AIS). Methods Fifty-five AIS patients were prospectively ...
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Effect of curve location on the severity index for adolescent idiopathic scoliosis: a longitudinal cohort study Article dans une revue avec comité de lectureVERGARI, Claudio; SKALLI, Wafa; ABELIN-GENEVOIS, Kariman; BERNARD, Jean Claude; HU, Zongshan; CHENG, Jack Chun Yiu; CHU, Winnie Chiu Wing; ASSI, Ayman; KARAM, Mohammad; GHANEM, Ismat; BASSANI, Tito; GALBUSERA, Fabio; SCONFIENZA, Luca Maria; BRAYDA-BRUNO, Marco; COURTOIS, Isabelle; EBERMEYER, Eric; VIALLE, Raphael; LANGLAIS, Tristan; DUBOUSSET, Jean (Springer Science and Business Media LLC, 2021)Objectives Adolescent idiopathic scoliosis (AIS) is the most common spinal disorder in children. A severity index was recently proposed to identify the stable from the progressive scoliosis at the first standardized ...
Article dans une revue avec comité de lectureASSI, Ayman; KARAM, Mohamad; SKALLI, Wafa; VERGARI, Claudio; VIALLE, Raphael; PIETTON, Raphael; BIZDIKIAN, Aren J.; KHARRAT, Khalil; DUBOUSSET, Jean; GHANEM, Ismat (2021)Study Design: This was a multicentric cross-sectional descriptive study. Objective: To analyze patterns of 3D rib cage deformity in subjects with adolescent idiopathic scoliosis (AIS) and their relationship with the ...
Spine slenderness and wedging in adolescent idiopathic scoliosis and in asymptomatic population: an observational retrospective study Article dans une revue avec comité de lectureVERGARI, Claudio; KARAM, Mohammad; PIETTON, Raphaël; VIALLE, Raphaël; GHANEM, Ismat; SKALLI, Wafa; ASSI, Ayman (Springer Verlag, 2020)Purpose The origin of the deformity due to adolescent idiopathic scoliosis (AIS) is not known, but mechanical instability of the spine could be involved in its progression. Spine slenderness (the ratio of vertebral height ...