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Achilles and patellar tendinopathy display opposite changes in elastic properties: A shear wave elastography study

journal contribution
posted on 23.07.2019, 00:00 by BK Coombes, K Tucker, B Vicenzino, V Vuvan, R Mellor, Luke HealesLuke Heales, A Nordez, F Hug
To compare tendon elastic and structural properties of healthy individuals with those with Achilles or patellar tendinopathy. Sixty-seven participants (22 Achilles tendinopathy, 17 patellar tendinopathy, and 28 healthy controls) were recruited between March 2015 and March 2016. Shear wave velocity (SWV), an index of tissue elastic modulus, and tendon thickness were measured bilaterally at mid-tendon and insertional regions of Achilles and patellar tendons by an examiner blinded to group. Analysis of covariance, adjusted for age, body mass index, and sex was used to compare differences in tendon thickness and SWV between the two tendinopathy groups (relative to controls) and regions. Tendon thickness was included as a covariate for analysis of SWV. Compared to controls, participants with Achilles tendinopathy had lower SWV at the distal insertion (Mean difference MD; 95% CI: −1.56; −2.49 to −0.62 m/s; P <.001) and greater thickness at the mid-tendon (MD 0.19; 0.05-0.33 cm; P =.007). Compared to controls, participants with patellar tendinopathy had higher SWV at both regions (MD 1.25; 0.40-2.10 m/s; P =.005) and greater thickness proximally (MD 0.17; 0.06-0.29 cm; P =.003). Compared to controls, participants with Achilles and patellar tendinopathy displayed lower Achilles tendon elastic modulus and higher patellar tendon elastic modulus, respectively. More research is needed to explore whether maturation, aging, or chronic load underlie these findings and whether current management programs for Achilles and patellar tendinopathy need to be tailored to the tendon. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd

History

Volume

28

Issue

3

Start Page

1201

End Page

1208

Number of Pages

8

eISSN

1600-0838

ISSN

0905-7188

Publisher

Wiley-Blackwell Publishing, UK

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

University of Queensland; University of Nantes, France

Era Eligible

Yes

Journal

Scandinavian Journal of Medicine and Science in Sports