Spine slenderness and wedging in adolescent idiopathic scoliosis and in asymptomatic population: an observational retrospective study
TypeArticles dans des revues 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.
Files in this item
Showing items related by title, author, creator and subject.
Quasi-automatic early detection of progressive idiopathic scoliosis from biplanar radiography: a preliminary validation VERGARI, Claudio; GAJNY, Laurent; COURTOIS, Isabelle; EBERMEYER, Eric; ABELIN-GENEVOIS, Kariman; KIM, Youngwoo; LANGLAIS, Tristan; VIALLE, Raphaël; ASSI, Ayman; GHANEM, Ismat; DUBOUSSET, Jean; SKALLI, Wafa (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 ...
KARAM, Mohammad; BIZDIKIAN, Aren Joe; KHALIL, Nour; BAKOUNY, Ziad; OBEID, Ibrahim; GHANIMEH, Joe; LABAKI, Chris; MJAESS, Georges; KARAM, Aya; SKALLI, Wafa; KHARRAT, Khalil; GHANEM, Ismat; ASSI, Ayman (Springer, 2020)Purpose: To evaluate the 3D deformity of the acetabula and lower limbs in subjects with adolescent idiopathic scoliosis (AIS) and their relationship with spino-pelvic alignment. Methods: Two hundred and seventy-four subjects ...
LABAKI, Chris; OTAYEK, Joeffroy; MASSAAD, Abir; BAKOUNY, Ziad; KARAM, Mohammad; HANNA, Cyril; KASSAB, Anthony; BIZDIKIAN, Aren Joe; MJAESS, Georges; KARAM, Aya; SKALLI, Wafa; GHANEM, Ismat; ASSI, Ayman (American Association of Neurological Surgeons, 2019)OBJECTIVE The aim of this study was to determine if the apical vertebra (AV) in patients with adolescent idiopathic scoliosis (AIS) is the most rotated vertebra in the scoliotic segment. METHODS A total of 158 patients ...
Three dimensional kinematics of upper limb anatomical movements in asymptomatic adults: Dominant vs.non-dominant ASSI, Ayman; BAKOUNY, Ziad; KARAM, Mohammad; MASSAAD, Abir; SKALLI, Wafa; GHANEM, Ismat (ELSEVIER, 2016)The effect of dominance on upper limb (UL) kinematics has only been studied on scapular movements. Moreover, when an anatomical UL movement is performed in a specific plane, secondary movements in the remaining planes ...
How do 3D skeletal parameters and demographics determine kinematic adaptation from normal to fast speed gait? MJAESS, Georges; KARAM, Aya; LABAKI, Chris; YARED, Fares; BIZDIKIAN, Aren Joe; BAKOUNY, Ziad; SKALLI, Wafa; GHANEM, Ismat; ASSI, Ayman (Elsevier, 2018)The occurrence of falls during gait in elderly people is an important source of morbidity . One of the useful screening tests for falls is the kinematic analysis of fast walking, that identiﬁes subjects with risk of ...