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Proceedings Paper

Assessment and characterization of in situ rotator cuff biomechanics
Author(s): Erika A. Trent; Lane Bailey; Fuad N. Mefleh; Vipul Pai Raikar; Ellen Shanley; Charles A. Thigpen; Delphine Dean; David M. Kwartowitz
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Paper Abstract

Rotator cuff disease is a degenerative disorder that is a common, costly, and often debilitating, ranging in severity from partial thickness tear, which may cause pain, to total rupture, leading to loss in function. Currently, clinical diagnosis and determination of disease extent relies primarily on subjective assessment of pain, range of motion, and possibly X-ray or ultrasound images. The final treatment plan however is at the discretion of the clinician, who often bases their decision on personal experiences, and not quantitative standards. The use of ultrasound for the assessment of tissue biomechanics is established, such as in ultrasound elastography, where soft tissue biomechanics are measured. Few studies have investigated the use of ultrasound elastography in the characterization of musculoskeletal biomechanics. To assess tissue biomechanics we have developed a device, which measures the force applied to the underlying musculotendentious tissue while simultaneously obtaining the related ultrasound images. In this work, the musculotendinous region of the infraspinatus of twenty asymptomatic male organized baseball players was examined to access the variability in tissue properties within a single patient and across a normal population. Elastic moduli at percent strains less than 15 were significantly different than those above 15 percent strain within the normal population. No significant difference in tissue properties was demonstrated within a single patient. This analysis demonstrated elastic moduli are variable across individuals and incidence. Therefore threshold elastic moduli will likely be a function of variation in local-tissue moduli as opposed to a specific global value.

Paper Details

Date Published: 29 March 2013
PDF: 5 pages
Proc. SPIE 8672, Medical Imaging 2013: Biomedical Applications in Molecular, Structural, and Functional Imaging, 86721M (29 March 2013); doi: 10.1117/12.2007437
Show Author Affiliations
Erika A. Trent, Clemson Univ. (United States)
Lane Bailey, Proaxis Therapy (United States)
Univ. of South Carolina (United States)
Fuad N. Mefleh, Clemson Univ. (United States)
Vipul Pai Raikar, Clemson Univ. (United States)
Ellen Shanley, Proaxis Therapy (United States)
Charles A. Thigpen, Proaxis Therapy (United States)
Delphine Dean, Clemson Univ. (United States)
David M. Kwartowitz, Clemson Univ. (United States)

Published in SPIE Proceedings Vol. 8672:
Medical Imaging 2013: Biomedical Applications in Molecular, Structural, and Functional Imaging
John B. Weaver; Robert C. Molthen, Editor(s)

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