Ultrasound elastography assessment of the supraspinatus
The elasticity of human tissue is a parameter that indicates tissue quality or condition. Measurement of elasticity could also be useful in assessing the activity of skeletal muscle. Musculoskeletal (MSK) ultrasound elastography appears to be suitable for measuring muscle activity in clinical settings because it offers real-time measurement with patients in less restricted postures and joint positions. MSK ultrasound real-time tissue elastography (RTE) is one of the elastography techniques and uses light tissue compression with an ultrasound transducer. The compression is applied to generate strain in living tissues, and then, RTE shows mapping of strain distribution within the tissues in real time. Elasticity in a target tissue can be calculated by comparing the strain in the tissue with that in another tissue.
The purpose of this study was to measure the elasticity of the supraspinatus muscle belly and tendon using ultrasound real-time elastography and determine the changes in
elasticity that occur with muscle contraction.
The authors concluse that RTE has a potential to detect changes in the elasticity of the supraspinatus muscle and tendon under various muscle contraction conditions. This technique might be useful in the noninvasive assessment of supraspinatus tendon stress/strain and supraspinatus muscle activity in clinical practice.
> From: Muraki et al., J Shoulder Elbow Surg (2014) (Epub ahead of print). All rights reserved to Journal of Shoulder and Elbow Surgery Board of Trustees.. Click here for the Pubmed summary.