Reliability of a Two-probe Ultrasound Imaging Procedure to Measure Strain in the Achilles Tendon

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aut.relation.articlenumber49en_NZ
aut.relation.endpage9
aut.relation.journalJournal of Foot and Ankle Researchen_NZ
aut.relation.startpage1
aut.relation.volume12en_NZ
aut.researcherDrabsch, Julie
dc.contributor.authorMolyneux, Pen_NZ
dc.contributor.authorEllis, RFen_NZ
dc.contributor.authorCarroll, Men_NZ
dc.date.accessioned2019-11-27T02:51:57Z
dc.date.available2019-11-27T02:51:57Z
dc.date.copyright2019en_NZ
dc.date.issued2019en_NZ
dc.description.abstractBackground: Alteration in the strain properties of the Achilles tendon may lead to adaptations such as pathological stiffening. Stiff tendons have reduced adaptive ability, which may increase the risk for developing tendinopathy. Strain can be measured using musculoskeletal ultrasound imaging. A two-probe ultrasound procedure may reduce the measurement error associated with a one-probe procedure. However, the reliability of the two-probe procedure has not been established. This study aimed to determine the within-session intra-and inter-rater reliability and between-session reliability of a two-probe ultrasound procedure to measure Achilles tendon strain. Methods: Participants were 29 healthy individuals (19 females, 10 males; mean age 33.6 years). Achilles tendon images were acquired with a two-probe ultrasound procedure as the ankle moved through a standardised range of motion (20° plantarflexion to 10° dorsiflexion). Both probes were positioned longitudinally, one over the musculotendinous junction and the second over the calcaneal insertion of the Achilles tendon. Repeat measurements were taken for all participants at the initial study visit, and for 10 participants in a second measurement session 4 weeks later. Strain measures were calculated from pre-captured images using Motion Analysis 2014v1 software by two independent raters. Within-session intra-and inter-rater reliability and between-session intra-rater reliability were calculated using intraclass correlation coefficients (ICC) with 95% confidence intervals. The standard error of measurement was also calculated. Results: The two-probe procedure to measure Achilles tendon strain showed excellent within-session intra-rater (ICC = 0.84, p < 0.001) and inter-rater reliability (ICC = 0.88, p = 0.003), but poor between-session intra-rater reliability (ICC = 0.18, p = 0.397). Conclusion: The two-probe procedure to measure Achilles tendon strain is reliable for repeated measurements on the same day. However, measurement error increased when strain was measured on different days, which may be attributable to a combination of examiner error and participant factors. Measurement of Achilles tendon strain offers an additional tool for evaluating the tendon's mechanical characteristics. The ability to reliably quantify strain may allow clinicians to identify those at risk for Achilles tendinopathy and formulate more effective management plans.en_NZ
dc.identifier.citationJournal of Foot and Ankle Research, 12(1), 1-9.
dc.identifier.doi10.1186/s13047-019-0358-6en_NZ
dc.identifier.issn1757-1146en_NZ
dc.identifier.issn1757-1146en_NZ
dc.identifier.urihttps://hdl.handle.net/10292/13048
dc.publisherBioMed Centralen_NZ
dc.relation.urihttps://jfootankleres.biomedcentral.com/articles/10.1186/s13047-019-0358-6
dc.rights© The Author(s). 2019 Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
dc.rightsBioMed Central
dc.rights.accessrightsOpenAccessen_NZ
dc.subjectAchilles tendon; Ultrasound imaging; Reliability
dc.titleReliability of a Two-probe Ultrasound Imaging Procedure to Measure Strain in the Achilles Tendonen_NZ
dc.typeJournal Article
pubs.elements-id364087
pubs.organisational-data/AUT
pubs.organisational-data/AUT/Health & Environmental Science
pubs.organisational-data/AUT/Health & Environmental Science/Clinical Sciences
pubs.organisational-data/AUT/PBRF
pubs.organisational-data/AUT/PBRF/PBRF Health and Environmental Sciences
pubs.organisational-data/AUT/PBRF/PBRF Health and Environmental Sciences/HH Clinical Sciences 2018 PBRF
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