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Geometric Structure of 3D Spinal Curves : Plane Regions and Connecting Zones
Joint Authors
Dimnet, J.
Berthonnaud, E.
Hilmi, R.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-02-20
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
This paper presents a new study of the geometric structure of 3D spinal curves.
The spine is considered as an heterogeneous beam, compound of vertebrae and intervertebral discs.
The spine is modeled as a deformable wire along which vertebrae are beads rotating about the wire.
3D spinal curves are compound of plane regions connected together by zones of transition.
The 3D spinal curve is uniquely flexed along the plane regions.
The angular offsets between adjacent regions are concentrated at level of the middle zones of transition, so illustrating the heterogeneity of the spinal geometric structure.
The plane regions along the 3D spinal curve must satisfy two criteria: (i) a criterion of minimum distance between the curve and the regional plane and (ii) a criterion controlling that the curve is continuously plane at the level of the region.
The geometric structure of each 3D spinal curve is characterized by the sizes and orientations of regional planes, by the parameters representing flexed regions and by the sizes and functions of zones of transition.
Spinal curves of asymptomatic subjects show three plane regions corresponding to spinal curvatures: lumbar, thoracic and cervical curvatures.
In some scoliotic spines, four plane regions may be detected.
American Psychological Association (APA)
Berthonnaud, E.& Hilmi, R.& Dimnet, J.. 2012. Geometric Structure of 3D Spinal Curves : Plane Regions and Connecting Zones. ISRN Orthopedics،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-502391
Modern Language Association (MLA)
Berthonnaud, E.…[et al.]. Geometric Structure of 3D Spinal Curves : Plane Regions and Connecting Zones. ISRN Orthopedics No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-502391
American Medical Association (AMA)
Berthonnaud, E.& Hilmi, R.& Dimnet, J.. Geometric Structure of 3D Spinal Curves : Plane Regions and Connecting Zones. ISRN Orthopedics. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-502391
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-502391