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Vertebral axial rotation measurement method.

Wei-Min Chi·Ching-Wei Cheng·Wei-Cheng Yeh·Shih-Chang Chuang·Ti-Sheng Chang·Jian-Horng Chen
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Abstract

This study presents a new method for measuring axial rotation of vertebra. Anatomical landmarks of the vertebral body were first recognized in X-ray film. By employing appropriate geometrical relationships, vertebral body shape parameters and a computer iteration method, the rotation angle of vertebra on the transverse plane can rapidly be obtained. A cadaver lumbar spine axial rotation-fixation device was designed to confirm the accuracy of the proposed methodology. Rotation angles on CT images were adopted as the golden standard and compared with analytical results based on X-ray films. Analytical results demonstrated that the proposed method obtained more accurate and reliable results than previous methods.

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AlgorithmsAnthropometryArthrographyBackBiomechanical PhenomenaChiropracticHumansImage Processing, Computer-AssistedImaging, Three-DimensionalLumbar VertebraeModels, AnatomicMotionMovementRange of Motion, ArticularReproducibility of ResultsRotationScoliosisSpineThoracic VertebraeTomography, X-Ray ComputedX-RaysJournal ArticleResearch Support, Non-U.S. Gov't

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Wei-Min Chi, Ching-Wei Cheng, Wei-Cheng Yeh, Shih-Chang Chuang, Ti-Sheng Chang, Jian-Horng Chen. 2005-11-21. Vertebral axial rotation measurement method.. https://doi.org/10.1016/j.cmpb.2005.10.004

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