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Glenohumeral joint capsular tissue tension loading correlates moderately with shear wave elastography: a cadaveric investigation

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Nichols, Charles W. et Brismée, Jean-Michel et Hooper, Troy L. et Bertrand-Grenier, Antony et Gilbert, Kerry K. et St-Pierre, Marc-Olivier et Kapila, Jeegisha et Sobczak, Stéphane (2020). Glenohumeral joint capsular tissue tension loading correlates moderately with shear wave elastography: a cadaveric investigation. Ultrasonography, 39 (2). p. 114-120. ISSN 2288-5919 DOI 10.14366/usg.19032

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Résumé

Purpose
The purpose of this study was to investigate changes in the mechanical properties of capsular tissue using shear wave elastography (SWE) and a durometer under various tensile loads, and to explore the reliability and correlation of SWE and durometer measurements to evaluate whether SWE technology could be used to assess tissue changes during capsule tensile loading.
Methods
The inferior glenohumeral joint capsule was harvested from 10 fresh human cadaveric specimens. Tensile loading was applied to the capsular tissue using 1-, 3-, 5-, and 8-kg weights. Blinded investigators measured tissue stiffness and hardness during loading using SWE and a durometer, respectively. Intraobserver reliability was established for SWE and durometer measurements using intraclass correlation coefficients (ICCs). The Pearson product-moment correlation was used to assess the associations between SWE and durometer measurements.
Results
The ICC3,5 for durometer measurements was 0.90 (95% confidence interval [CI], 0.79 to 0.96; P<0.001) and 0.95 (95% CI, 0.88 to 0.98; P<0.001) for SWE measurements. The Pearson correlation coefficient values for 1-, 3-, and 5-kg weights were 0.56 (P=0.095), 0.36 (P=0.313), and -0.56 (P=0.089), respectively. When the 1- and 3-kg weights were combined, the ICC3,5 was 0.72 (P<0.001), and it was 0.62 (P<0.001) when the 1-, 3-, and 5-kg weights were combined. The 8-kg measurements were severely limited due to SWE measurement saturation of the tissue samples.
Conclusion
This study suggests that SWE is reliable for measuring capsular tissue stiffness changes in vitro at lower loads (1 and 3 kg) and provides a baseline for the non-invasive evaluation of effects of joint loading and mobilization on capsular tissues in vivo.

Type de document: Article
Mots-clés libres: joint capsule elasticity hardness elastography reliability
Date de dépôt: 16 avr. 2020 21:10
Dernière modification: 16 avr. 2020 21:10
Version du document déposé: Version officielle de l'éditeur
URI: http://depot-e.uqtr.ca/id/eprint/9203

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