Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6664
Title: Shear elastic modulus on patellar tendon captured from supersonic shear imaging : correlation with tangent traction modulus computed from material testing system and test–retest reliability
Authors: Zhang, ZJ
Fu, SN 
Issue Date: 27-Jun-2013
Publisher: Public Library of Science
Source: PLoS one, 27 June 2013, v. 8, no. 6, e68216, p. 1-9 How to cite?
Journal: PLoS one 
Abstract: Characterization of the elastic properties of a tendon could enhance the diagnosis and treatment of tendon injuries. The purpose of this study was to examine the correlation between the shear elastic modulus on the patellar tendon captured from a Supersonic Shear Imaging (SSI) and the tangent traction modulus computed from a Material testing system (MTS) on 8 fresh patellar pig tendons (Experiment I). Test–retest reliability of the shear elastic modulus captured from the SSI was established in Experiment II on 22 patellar tendons of 11 healthy human subjects using the SSI. Spearman Correlation coefficients for the shear elastic modulus and tangent traction modulus ranged from 0.82 to 1.00 (all p<0.05) on the 8 tendons. The intra and inter-operator reliabilities were 0.98 (95% CI: 0.93–0.99) and 0.97 (95% CI: 0.93–0.98) respectively. The results from this study demonstrate that the shear elastic modulus of the patellar tendon measured by the SSI is related to the tangent traction modulus quantified by the MTS. The SSI shows good intra and inter-operator repeatability. Therefore, the present study shows that SSI can be used to assess elastic properties of a tendon.
URI: http://hdl.handle.net/10397/6664
EISSN: 1932-6203
DOI: 10.1371/journal.pone.0068216
Rights: © 2013 Zhang et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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