A Novel Classification of 3D Rib Cage Deformity in Subjects With Adolescent Idiopathic Scoliosis
TypeArticles dans des revues avec comité de lecture
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 spinal deformity. Summary of Background Data: Subjects with AIS present with rib cage deformity that can affect respiratory functions. The 3D rib cage deformities in AIS and their relationship to the spinal deformity are still unelucidated. Methods: A total of 200 AIS and 71 controls underwent low-dose biplanar x-rays and had their spine and rib cage reconstructed in 3-dimensional (D). Classic spinopelvic parameters were calculated in 3D and: rib cage gibbosity, thickness, width, volume and volumetric spinal penetration index (VSPI). Subjects with AIS were classified as: group I with mild rib cage deformity (n=88), group II with severe rib cage deformity (n=112) subgrouped into IIa (high gibbosity, n=48), IIb (high VSPI, n=48), and IIc (both high gibbosity and VSPI, n=16). Results: Groups IIa and IIb had a higher Cobb angle (33 vs. 54 degrees and 46 degrees, respectively) and torsion index (11 vs. 14 degrees and 13 degrees, respectively) than group I. Group IIb showed more severe hypokyphosis (IIb=21 degrees; IIa=33 degrees; I=36 degrees; control=42 degrees) with a reduced rib cage volume (IIb=4731 cm3; IIa=4985 cm3; I=5257 cm3; control=5254 cm3) and thickness (IIb=135 mm; IIa=148 mm; I=144 mm; control=144 mm). Group IIa showed an increasingly large local gibbosity descending from proximal to distal levels and did not follow the axial rotation of the spine. Group IIc showed characteristics of both groups IIa and IIb. Conclusions: This new classification of 3D rib cage deformity in AIS shows that the management of cases with high VSPI (groups IIb and IIc) should focus on restoring as much kyphosis as possible to avoid respiratory repercussions. Treatment indications in groups I and IIa would follow the consensual basic principles reported in the literature regarding bracing and surgery.
Files in this item
Showing items related by title, author, creator and subject.
Spine slenderness and wedging in adolescent idiopathic scoliosis and in asymptomatic population: an observational retrospective study VERGARI, Claudio; KARAM, Mohammad; PIETTON, Raphaël; VIALLE, Raphaël; GHANEM, Ismat; SKALLI, Wafa; ASSI, Ayman (Springer, 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 ...
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 ...
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 ...