Poor reproducibility of compression elastography in the Achilles tendon: same day and consecutive day measurements.

Payne, Catherine, Webborn, Nick, Watt, Peter and Cercignani, Mara ORCID: https://orcid.org/0000-0002-4550-2456 2017. Poor reproducibility of compression elastography in the Achilles tendon: same day and consecutive day measurements. Skeletal Radiology 46 , pp. 889-895. 10.1007/s00256-017-2629-2

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Abstract

<h4>Objective</h4>To determine the reproducibility of compression elastography (CE) when measuring strain data, a measure of stiffness of the human Achilles tendon in vivo, over consecutive measures, consecutive days and when using different foot positions.<h4>Materials and methods</h4>Eight participants (4 males, 4 females; mean age 25.5 ± 2.51 years, range 21-30 years; height 173.6 ± 11.7 cm, range 156-189 cm) had five consecutive CE measurements taken on one day and a further five CE measures taken, one per day, at the same time of day, every day for a consecutive 5-day period. These 80 measurements were used to assess both the repeatability and reproducibility of the technique. Means, standard deviations, coefficient of variation (CV), Pearson correlation analysis (R) and intra-class correlation coefficients (ICC) were calculated.<h4>Results</h4>For CE data, all CVs were above 53%, R values indicated no-to-weak correlations between measures at best (range 0.01-0.25), and ICC values were all classified in the poor category (range 0.00-0.11). CVs for length and diameter measures were acceptably low indicating a high level of reliability.<h4>Conclusions</h4>Given the wide variation obtained in the CE results, it was concluded that CE using this specific system has a low level of reproducibility for measuring the stiffness of the human Achilles tendon in vivo over consecutive days, consecutive measures and in different foot positions.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Psychology Cardiff University Brain Research Imaging Centre (CUBRIC)
Publisher:	Springer Verlag (Germany)
ISSN:	0364-2348
Date of Acceptance:	8 March 2017
Last Modified:	09 Nov 2022 10:35
URI:	https://orca.cardiff.ac.uk/id/eprint/139959

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