Measuring Myofascial Shear Strain in Chronic Shoulder Pain with Ultrasound Shear Strain Imaging: a Case Report

Overview

Journal BMC Musculoskelet Disord

Publisher Biomed Central

Specialties Orthopedics
Physiology

Date 2024 May 27

PMID 38802774

Authors

Lingyi Zhao

Jonny Huang

Muyinatu A Lediju Bell

Preeti Raghavan

Affiliations

Soon will be listed here.

Abstract

Background: Dysfunctional gliding of deep fascia and muscle layers forms the basis of myofascial pain and dysfunction, which can cause chronic shoulder pain. Ultrasound shear strain imaging may offer a non-invasive tool to quantitatively evaluate the extent of muscular dysfunctional gliding and its correlation with pain. This case study is the first to use ultrasound shear strain imaging to report the shear strain between the pectoralis major and minor muscles in shoulders with and without chronic pain.

Case Presentation: The shear strain between the pectoralis major and minor muscles during shoulder rotation in a volunteer with chronic shoulder pain was measured with ultrasound shear strain imaging. The results show that the mean ± standard deviation shear strain was 0.40 ± 0.09 on the affected side, compared to 1.09 ± 0.18 on the unaffected side (p<0.05). The results suggest that myofascial dysfunction may cause the muscles to adhere together thereby reducing shear strain on the affected side.

Conclusion: Our findings elucidate a potential pathophysiology of myofascial dysfunction in chronic shoulder pain and reveal the potential utility of ultrasound imaging to provide a useful biomarker for shear strain evaluation between the pectoralis major and minor muscles.

Citing Articles

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Ashikuzzaman M, Sharma A, Venkatayogi N, Oluyemi E, Myers K, Ambinder E IEEE Trans Ultrason Ferroelectr Freq Control. 2024; 71(11):1389-1405.

PMID: 39186421 PMC: 11861389. DOI: 10.1109/TUFFC.2024.3449815.

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