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Published in: European Spine Journal 11/2013

01-11-2013 | Original Article

Transverse plane 3D analysis of mild scoliosis

Authors: Aurélien Courvoisier, Xavier Drevelle, Jean Dubousset, Wafa Skalli

Published in: European Spine Journal | Issue 11/2013

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Abstract

Purpose

To demonstrate the reality of a transverse plane pattern independent of the scoliotic curve location and to show the importance of the transverse plane pattern in the assessment of the progression risk in a population of mild scoliosis.

Methods

Spines of 111 patients with adolescent idiopathic mild scoliosis were reconstructed using biplanar stereoradiography. The apical axial rotation, the intervertebral axial rotation at junctions and the torsion index were computed. Mean values of each parameter were compared between thoracic, thoracolumbar and lumbar curves. Then a cluster analysis was performed using these parameters on 78 patients with effective outcomes at skeletal maturity. The effective outcomes and the results reached with the statistical analysis were compared and analyzed (ROC and logistic regression).

Results

No statistical difference was observed when considering each parameter between the different types of curves. Two clusters independent of the curve type were identified. The mean values of transverse plane parameters were significantly higher in Cluster 1 than in Cluster 2. 91 % of patients classified in Cluster 1 had progressive curve and 73 % of patients classified in Cluster 2 remained stable at skeletal maturity. All parameters were good predictors but the best was the torsion index.

Conclusions

This study demonstrated that a transverse plane pattern combining apical axial rotation, the intervertebral axial rotation at junctions and the torsion index is independent of the scoliotic curve location and significant in the determination of the progression risk of mild scoliosis.
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Metadata
Title
Transverse plane 3D analysis of mild scoliosis
Authors
Aurélien Courvoisier
Xavier Drevelle
Jean Dubousset
Wafa Skalli
Publication date
01-11-2013
Publisher
Springer Berlin Heidelberg
Published in
European Spine Journal / Issue 11/2013
Print ISSN: 0940-6719
Electronic ISSN: 1432-0932
DOI
https://doi.org/10.1007/s00586-013-2862-x

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