Day Joseph M, Merriman Harold
Department of Physical Therapy, University of Dayton, Ohio, USA.
Shoulder Elbow. 2024 Apr;16(2):159-168. doi: 10.1177/17585732231179115. Epub 2023 May 31.
Imbalances in soft tissue stiffness (STS) of the pectoralis and common wrist extensors (CWEs) can adversely alter upper extremity function. Shear wave elastography (SWE) has the capacity to provide precise, repeatable, objective data on STS. The purpose of this study was to determine the between-day intrarater reliability for the pectoralis and CWE tendon stiffness as measured by SWE.
STS measured by the shear wave modulus (kilopascals (kPa)) was captured bilaterally on the pectoralis major, pectoralis minor, and CWE tendon using 2D SWE ultrasound imaging (GE Logiq S8, 9 L transducer) on two separate days. Within examiner intraclass correlation coefficients (ICC (3, 3)) with 95% confidence intervals, standard error of the measure, and minimal detectable changes were calculated.
The investigators recruited 10 healthy participants (mean age = 23.50 ± 1.43). Between day intrarater reliability values were obtained for the dominant pectoralis major ICC = 0.70 (-0.15, -0.93), nondominant pectoralis major ICC = 0.63 (-0.30, -0.91), dominant pectoralis minor ICC = 0 .72(-0.04, -0.93), nondominant pectoralis minor ICC = 0.75(0.08, -0.94), dominant CWE tendon ICC = 0.75(-0.08, -0.94), and nondominant CWE tendon ICC = 0.75(-0.12, -0.94).
Our data demonstrate acceptable reliability but future studies should include methods that control for variables known to effect STS.
胸大肌和腕部伸肌（CWE）的软组织硬度（STS）失衡会对上肢功能产生不利影响。剪切波弹性成像（SWE）能够提供关于STS的精确、可重复的客观数据。本研究的目的是确定通过SWE测量的胸大肌和CWE肌腱硬度的日间测量者内可靠性。
使用二维SWE超声成像（GE Logiq S8，9L探头）在两个不同日期双侧采集胸大肌、胸小肌和CWE肌腱的通过剪切波模量（千帕斯卡（kPa））测量的STS。计算测量者内组内相关系数（ICC（3,3））及其95%置信区间、测量标准误差和最小可检测变化。
研究人员招募了10名健康参与者（平均年龄=23.50±1.43）。获得了优势侧胸大肌的日间测量者内可靠性值，ICC=0.70（-0.15，-0.93），非优势侧胸大肌ICC=0.63（-0.30，-0.91），优势侧胸小肌ICC=0.72（-0.04，-0.93），非优势侧胸小肌ICC=0.75（0.08，-0.94），优势侧CWE肌腱ICC=0.75（-0.08，-0.94），非优势侧CWE肌腱ICC=0.75（-0.12，-0.94）。
我们的数据表明可靠性尚可，但未来的研究应包括控制已知会影响STS的变量的方法。
