Abstract
The aim of this study is to investigate the stiffness which were assessed by SWE (shear wave elastographic) and ARFI (acoustic radiation force impulse) techniques at torn site and fibrotic change site of rotator cuff supraspinalis tendon. 49 patients were enrolled in the study with written consent and our study was allowed to perform by the Ethnics Commitee of our institution. All of them went through elastographic ultrasound examination by SWE (Supersonic Imagine) and ARFI (Siemens S2000) techniques There were 19 cases of intact rotator cuff supraspinatus tendon, 15 cases of torn supraspinatus tendon and 15 cases of fibrotic changes. Values of SWE velocity were of 22.10+/- 4.06 kPa, of 35.39+/-5.30 kPa and of 62.70+/-11.29kPa, respectively. Elastic velocity of torn and fibrotic groups were statistically different (p<0.0001) and different in comparison to intact tendon (p<0.0001). Elastograms with colored code show dark color on ARFI technique (hard) or red color (hard) on SWE technique. Partial and complete thickness rotator cuff tears are musculoskeletal condition of old patients. But elastographic ultrasound (SWE and ARFI) detected qualitatively and quantitatively stiff areas of abnormal supraspinatus tendon, while ARFI values (Siemens S2000) tend to be over the limit of measurement of ultrasound system.
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