Loading...
Video rasterstereography of the spine and pelvis in eight erect positions: A reliability study
Alzyoud, K. Hogg, P. Preece, S. England, A.
Alzyoud, K.
Hogg, P.
Preece, S.
England, A.
Publication Date
2020-02
End of Embargo
Supervisor
Rights
© 2019 The College of Radiographers. Published by Elsevier Ltd. All rights reserved. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
Peer-Reviewed
Yes
Open Access status
openAccess
Accepted for publication
2019-06-06
Institution
Department
Awarded
Embargo end date
Collections
Additional title
Abstract
To investigate the reliability and variability of Video Rasterstereography (VR) measurements of the spine and pelvis, for eight proposed standing postures, in order to help define an optimal standing position for erect pelvis radiography.
Methods:
Surface topography data were collected using the formetic 4D dynamic modelling (Diers) system. 61 healthy participants were recruited; each participant performed eight different standing positions. Four positions were performed with the feet shoulder width apart and parallel, and four positions were performed with the feet shoulder width apart and internally rotated. For the upper extremity, each of the (two sets of) four positions were performed with different arm positions (arms by the sides, arms crossed over the chest, arms 30° flexed and touching the medial end of the clavicle, arms 30° flexed with the hands holding a support). Three sets of surface topography were collected in the eight positions (n = 24). The variability was assessed by calculating standard error of the measurement (SEm) and the coefficient of variation (CV). Reliability was assessed using intra-class correlation coefficients (ICC ± 95% CI).
Results:
No significant differences in the SEm were found between the three paired measurements for all standing positions (P > 0.05). ICC values demonstrated excellent reliability for all measurements across the eight standing positions (range 0.879–1.00 [95% CI 0.813–1.00]).
Conclusion:
Evaluating eight standing positions radiographically would be unethical as it would involve repeat radiation exposures. Using the formetic 4D dynamic modelling (Diers) system, provides an alternative and has shown that there was only a minimal, non-statistically significant, differences between the eight different standing positions.
Version
Accepted manuscript
Citation
Alzyoud K, Hogg P, Snaith B et al (2020) Video rasterstereography of the spine and pelvis in eight erect positions: A reliability study. Radiography. 26(1): e7-e13.
Link to publisher’s version
Link to published version
Link to Version of Record
Type
Article