Author(s)	Ito, Naoaki
Author(s)	Sigurðsson, Haraldur B.
Author(s)	Pohlig, Ryan T.
Author(s)	Cortes, Daniel H.
Author(s)	Grävare Silbernagel, Karin
Author(s)	Sprague, Andrew L.
Date Accessioned	2022-12-19T19:31:05Z
Date Available	2022-12-19T19:31:05Z
Publication Date	2022-10-27
Description	This is the peer reviewed version of the following article: Ito, N., Sigurðsson, H.B., Pohlig, R.T., Cortes, D.H., Grävare Silbernagel, K. and Sprague, A.L. (2022), Reliability of Continuous Shear Wave Elastography in the Pathological Patellar Tendon. J Ultrasound Med. https://doi.org/10.1002/jum.16115, which has been published in final form at https://doi.org/10.1002/jum.16115. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. This article will be embargoed until 10/27/2023.
Abstract	Objectives Patellar tendon injuries occur via various mechanisms such as overuse, or due to surgical graft harvest for anterior cruciate ligament reconstruction (ACLR). Quantified patellar tendon stiffness after injury may help guide clinical care. Continuous shear wave elastography (cSWE) allows for the assessment of viscosity and shear modulus in tendons. The reliability of the measure, however, has not been established in the patellar tendon. The purpose of this study was to investigate the interrater reliability, intrarater reliability, and between-day stability of cSWE in both healthy and pathological patellar tendons. Methods Participants with patellar tendinopathy (n = 13), history of ACLR using bone-patellar tendon-bone autograft (n = 9), and with no history of patellar tendon injury (n = 13) were recruited. cSWE was performed 4 times by multiple raters over 2 days. Intraclass correlations (ICC) and minimum detectable change (MDC95%) were calculated. Results Good to excellent between-day stability were found for viscosity (ICC = 0.905, MDC95% = 8.3 Pa seconds) and shear modulus (ICC = 0.805, MDC95% = 27.4 kPa). The interrater reliability measures, however, were not as reliable (ICC = 0.591 and 0.532). Conclusions cSWE is a reliable assessment tool for quantifying patellar tendon viscoelastic properties over time. It is recommended, however, that a single rater performs the measure as the interrater reliability was less than ideal.
Sponsor	Funding was provided by the National Institutes of Health (NIH) including the National Institute of Arthritis and Musculoskeletal and Skin Diseases, and Eunice Kennedy Shriver National Institute of Child Health and Human Development: R37-HD037985, R01-AR072034, T32-HD007490. ALS's work was supported in part by Florence P. Kendall and Promotion of Doctoral Studies I scholarships from the Foundation for Physical Therapy Research. The authors of this manuscript have no conflicts of interest to disclose.
Citation	Ito, N., Sigurðsson, H.B., Pohlig, R.T., Cortes, D.H., Grävare Silbernagel, K. and Sprague, A.L. (2022), Reliability of Continuous Shear Wave Elastography in the Pathological Patellar Tendon. J Ultrasound Med. https://doi.org/10.1002/jum.16115
ISSN	1550-9613
URL	https://udspace.udel.edu/handle/19716/31804
Language	en_US
Publisher	Journal of Ultrasound in Medicine
Keywords	anterior cruciate ligament
Keywords	bone-patellar tendon-bone graft
Keywords	continuous shear wave elastography
Keywords	patellar tendon
Keywords	tendinopathy
Keywords	viscoelastic properties
Title	Reliability of Continuous Shear Wave Elastography in the Pathological Patellar Tendon
Type	Article

Reliability of Continuous Shear Wave Elastography in the Pathological Patellar Tendon

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