Spine slenderness and wedging in adolescent idiopathic scoliosis and in asymptomatic population: an observational retrospective study
Article dans une revue avec comité de lecture
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 to transversal size) could facilitate this instability, thus playing a role in scoliosis progression. The purpose of this work was to investigate slenderness and wedging of vertebrae and intervertebral discs in AIS patients, relative to their curve topology and to the morphology of control subjects. Methods A total of 321 AIS patients (272 girls, 14 ± 2 years old, median Risser sign 3, Cobb angle 35° ± 18°) and 83 controls were retrospectively included (56 girls, median Risser 2, 14 ± 3 years). Standing biplanar radiography and 3D reconstruction of the spine were performed. Geometrical features were computed: spinal length, vertebral and disc sizes, slenderness ratio, frontal and sagittal wedging angles. Measurement reproducibility was evaluated. Results AIS girls before 11 years of age had slightly longer spines than controls (p = 0.04, Mann–Whitney test). AIS verte- brae were significantly more slender than controls at almost all levels, almost independently of topology. Frontal wedging of apical vertebrae was higher in AIS, as expected, but also lower junctional discs showed higher wedging than controls. Conclusion AIS patients showed more slender spines than the asymptomatic population. Analysis of wedging suggests that lower junctional discs and apex vertebra could be locations of mechanical instability. Numerical simulation and longitudinal clinical follow-up of patients could clarify the impact of wedging, slenderness and growth on the biomechanics of scoliosis progression.
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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 ...
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 ...
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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 ...
Global postural malalignment in adolescent idiopathic scoliosis: The axial deformity is the main driver Article dans une revue avec comité de lectureKARAM, Mohamad; GHANEM, Ismat; VERGARI, Claudio; KHALIL, Nour; SAADE, Maria; CHAAYA, Céline; RTEIL, Ali; AYOUB, Elma; SAAD, Eddy; KHARRAT, Khalil; SKALLI, Wafa; ASSI, Ayman (Springer, 2022)Purpose: To evaluate the global alignment of non-operated subjects with adolescent idiopathic scoliosis. Method: A total of 254 subjects with AIS and 64 controls underwent low dose biplanar X-rays and had their spine, ...