Scoliose idiopathique de l’adolescent : effet de la décompensation coronale sur les paramètres biomécaniques des membres inférieurs

Márkus, István; Schlégl, Ádám Tibor; Burkus, Máté; József, Kristóf; Niklai, Bálint; Than, Péter; Tunyogi-Csapó, Miklós

doi:10.1016/j.rcot.2018.06.018

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“…Previous studies on subjects with AIS found acetabular and lower limbs alterations, such as decreased femoral torsion [4], a greater neck-shaft angle [5], differences in femur lengths, total lower limbs lengths and tibial torsions between sides of subjects with AIS [6]; these findings were attributed to spino-pelvic alterations. However, these studies remain scarce, and a comprehensive analysis of the relationship between the spino-pelvic deformity in AIS and acetabular and lower limb morphological alterations is lacking, especially since these alterations were shown to be related to the development of pathologies of the hip such as osteoarthritis [7].…”

Section: Introductionmentioning

confidence: 99%

Alterations of 3D acetabular and lower limb parameters in adolescent idiopathic scoliosis

et al. 2020

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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 with AIS (frontal Cobb: 33.5° ± 18° [10°-110°]) and 84 controls were enrolled. All subjects underwent full-body biplanar X-rays with subsequent 3D reconstructions. Classic spino-pelvic and lower limb parameters were collected as well as acetabular parameters: acetabular orientation in the 3 planes (tilt, anteversion and abduction), center-edge angle (CEA) and anterior and posterior sector angles. Subjects with AIS were represented by both lower limb sides and classified by elevated (ES) or lowered (LS), depending on the frontal pelvic obliquity. Parameters were then compared between groups. Determinants of acetabular and lower limb alterations were investigated among spino-pelvic parameters. Results Acetabular abduction was higher on the ES in AIS (59.2° ± 6°) when compared to both LS (55.6° ± 6°) and controls (57.5° ± 3.9°, p < 0.001). CEA and acetabular anteversion were higher on the LS in AIS (32° ± 6.1°, 20.5° ± 5.7°) when compared to both ES (28.7° ± 5.1°, 19.8° ± 5.1°) and controls (29.8° ± 4.8°, 19.1° ± 4°, respectively, p < 0.001). Anterior sector angle was lower on both ES and LS in AIS when compared to controls. CEA, acetabular abduction and acetabular anteversion were found to be mostly determined (adjusted R 2 : 0.08-0.32) by pelvic tilt and less by frontal pelvic obliquity, frontal Cobb and T1T12. Conclusions Subjects with AIS had a more abducted acetabulum at the lowered side, more anteverted acetabulum and a lack of anterior coverage of both acetabula. These alterations were strongly related to pelvic tilt.

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Section: Introductionmentioning

confidence: 99%