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Three-Dimensional Vertebral Wedging in Mild and Moderate Adolescent Idiopathic Scoliosis

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  • Sophie-Anne Scherrer
  • Mickaël Begon
  • Alberto Leardini
  • Christine Coillard
  • Charles-Hilaire Rivard
  • Paul Allard

Abstract

Background: Vertebral wedging is associated with spinal deformity progression in adolescent idiopathic scoliosis. Reporting frontal and sagittal wedging separately could be misleading since these are projected values of a single three-dimensional deformation of the vertebral body. The objectives of this study were to determine if three-dimensional vertebral body wedging is present in mild scoliosis and if there are a preferential vertebral level, position and plane of deformation with increasing scoliotic severity. Methodology: Twenty-seven adolescent idiopathic scoliotic girls with mild to moderate Cobb angles (10° to 50°) participated in this study. All subjects had at least one set of bi-planar radiographs taken with the EOS® X-ray imaging system prior to any treatment. Subjects were divided into two groups, separating the mild (under 20°) from the moderate (20° and over) spinal scoliotic deformities. Wedging was calculated in three different geometric planes with respect to the smallest edge of the vertebral body. Results: Factorial analyses of variance revealed a main effect for the scoliosis severity but no main effect of vertebral Levels (apex and each of the three vertebrae above and below it) (F = 1.78, p = 0.101). Main effects of vertebral Positions (apex and above or below it) (F = 4.20, p = 0.015) and wedging Planes (F = 34.36, p

Suggested Citation

  • Sophie-Anne Scherrer & Mickaël Begon & Alberto Leardini & Christine Coillard & Charles-Hilaire Rivard & Paul Allard, 2013. "Three-Dimensional Vertebral Wedging in Mild and Moderate Adolescent Idiopathic Scoliosis," PLOS ONE, Public Library of Science, vol. 8(8), pages 1-7, August.
    • Handle: RePEc:plo:pone00:0071504
    DOI: 10.1371/journal.pone.0071504
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    References listed on IDEAS

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    1. Georges Dalleau & Pierre Leroyer & Marlène Beaulieu & Chantal Verkindt & Charles-Hilaire Rivard & Paul Allard, 2012. "Pelvis Morphology, Trunk Posture and Standing Imbalance and Their Relations to the Cobb Angle in Moderate and Severe Untreated AIS," PLOS ONE, Public Library of Science, vol. 7(7), pages 1-6, July.
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    Cited by:

    1. Ervin Poorghasamians & Patricia C Aggabao & Tishya A L Wren & Skorn Ponrartana & Vicente Gilsanz, 2017. "Vertebral cross-sectional growth: A predictor of vertebral wedging in the immature skeleton," PLOS ONE, Public Library of Science, vol. 12(12), pages 1-9, December.

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