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Scoliosis
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Optimization of the examination posture in spinal curvature assessment
Scoliosis 2012, 7:10 doi:10.1186/1748-7161-7-10

Jakub Krejci (jakub.krejci@upol.cz) Jiri Gallo (jiri.gallo@volny.cz) Petr Stepanik(petr.stepanik@upol.cz) Jiri Salinger (jsalinger@volny.cz)

ISSN Article type Submission date Acceptance date Publication date Article URL

1748-7161 Methodology 7 December 2011 30 April 2012 30 April 2012 http://www.scoliosisjournal.com/content/7/1/10

This peer-reviewed article was published immediately upon acceptance. It can be downloaded, printed and distributed freely for any purposes (see copyrightnotice below). Articles in Scoliosis are listed in PubMed and archived at PubMed Central. For information about publishing your research in Scoliosis or any BioMed Central journal, go to http://www.scoliosisjournal.com/authors/instructions/ For information about other BioMed Central publications go to http://www.biomedcentral.com/

© 2012 Krejci et al. ; licensee BioMed Central Ltd. This is an openaccess article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Optimization of the examination posture in spinal curvature assessment
Jakub Krejci,Aff1
Email: jakub.krejci@upol.cz

Jiri Gallo,Aff2Corresponding author Email: jiri.gallo@volny.cz

Petr Stepanik,Aff1
Email: petr.stepanik@upol.cz

Jiri Salinger,Aff1
Email: jsalinger@volny.cz
Aff1

Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacky University, Olomouc, Czech Republic Aff2 Department of Orthopedics, University Hospital, Faculty of Medicine and Dentistry, Palacky University Olomouc,Czech Republic

Abstract
To decrease the influence of postural sway during spinal measurements, an instrumented fixation posture (called G) was proposed and tested in comparison with the free standing posture (A) using the DTP-3 system in a group of 70 healthy volunteers. The measurement was performed 5 times on each subject and each position was tested by a newly developed device for non-invasivespinal measurements called DTP-3 system. Changes in postural stability of the spinous processes for each subject/the whole group were evaluated by employing standard statistical tools. Posture G, when compared to posture A, reduced postural sway significantly in all spinous processes from C3 to L5 in both the mediolateral and anterioposterior directions. Posture G also significantly reducedpostural sway in the vertical direction in 18 out of 22 spinous processes. Importantly, posture G did not significantly influence the spinal curvature.

Keywords
Spinal deformity, Examination posture, Postural sway, Non-invasive assessment, DTP-3 system, Approximation polynomial

Background
Assessment of spinal deformity, especially adolescent idiopathic scoliosis, is generally performedradiologically along with evaluation of the spinal curvature using the Cobb method. Although radiography is the golden standard in orthopaedic practice, it carries health risk from exposure to ionizing radiation [1]. To this end, radiography seems to be unsuitable for screening spinal deformity in its early stages and moreover, it is risky when used for repeated monitoring after conservative or surgicaltherapy [2]. Therefore, various examination methods enabling non-invasive spinal curvature assessment have been

developed [3-7]. However, these methods have not gained widespread use in clinical practice as yet. The main problem may be in the relatively low correlation between radiographic and non-invasive spinal curvature measurements [8]. It is well-known that maintaining a standing posture...