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Poor_reprod Cercignani et al 2017.pdf (731.9 kB)

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

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posted on 2023-06-09, 13:09 authored by Catherine Payne, Nick Webborn, Peter Watt, Mara Cercignani
OBJECTIVE 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. MATERIALS AND METHODS 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. RESULTS 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. CONCLUSIONS 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.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Skeletal Radiology

ISSN

0364-2348

Publisher

Springer Verlag

Issue

7

Volume

46

Page range

889-895

Department affiliated with

  • BSMS Neuroscience Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-05-03

First Open Access (FOA) Date

2018-05-03

First Compliant Deposit (FCD) Date

2018-05-03

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