Breakthrough in three-dimensional scoliosis diagnosis: significance of horizontal plane view and vertebra vectors

Scoliosis is a multifactorial three-dimensional (3D) spinal deformity with integral and directly related vertebral deviations in the coronal, sagittal and horizontal planes. Current classification and diagnostic methods rely on two-dimensional (2D) frontal and lateral X-ray images; no routine method...

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Bibliographic Details
Published in:European spine journal 2011-01, Vol.20 (1), p.135-143
Main Authors: Illes, Tamas, Tunyogi-Csapo, Miklos, Somoskeoey, Szabolcs
Format: Article
Language:English
Subjects:
Humans
Imaging, Three-Dimensional - methods
Medicine
Medicine & Public Health
Neurosurgery
Original
Original Article
Radiography
Scoliosis - diagnostic imaging
Spine - diagnostic imaging
Surgical Orthopedics
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Summary:Scoliosis is a multifactorial three-dimensional (3D) spinal deformity with integral and directly related vertebral deviations in the coronal, sagittal and horizontal planes. Current classification and diagnostic methods rely on two-dimensional (2D) frontal and lateral X-ray images; no routine methods are available for the visualization and quantitative evaluation of deviations in the horizontal plane. The EOS 2D/3D system presented here is a new, low-dose, orthopedic radiodiagnostic device based on Nobel prize-winning X-ray detection technology with special software for 3D surface reconstruction capabilities that finally led to a breakthrough in scoliosis diagnosis with high-quality, realistic 3D visualization and accurate quantitative parametric analysis. A new concept introducing vertebra vectors and vertebra vector parametric calculations is introduced that furnishes simplified visual and intelligible mathematical information facilitating interpretation of EOS 2D/3D data, especially with regard to the horizontal plane top view images. The concept is demonstrated by a reported scoliotic case that was readily characterized through information derived from vertebra vectors alone, supplemented with the current angulation measurement methods in the coronal and sagittal planes and axial vertebral rotation measurements in the horizontal plane, with a calibrated 3D coordinate system suitable for inter-individual comparisons. The new concept of vertebra vectors may serve as a basis for a truly 3D classification of scoliosis.
ISSN:0940-6719
1432-0932
DOI:10.1007/s00586-010-1566-8