Institute of Physiotherapy and Health Sciences, Musculoskeletal Elastography and Ultrasonography Laboratory, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland.
Institute of Physiotherapy and Health Sciences, Musculoskeletal Elastography and Ultrasonography Laboratory, The Jerzy Kukuczka Academy of Physical Education, Katowice, Poland.
J Manipulative Physiol Ther. 2020 May;43(4):303-310. doi: 10.1016/j.jmpt.2018.11.034. Epub 2020 Aug 28.
To date, studies evaluating the reliability of shear wave elastography (SWE) measures of the lateral abdominal muscles (LAMs) in adolescent patients with idiopathic scoliosis (AIS) have never been performed. The aim of the study was to assess the intrarater reliability of SWE and thickness of the LAMs at rest and during isometric contraction (10% of maximal voluntary contraction).
This was a single-group, repeated-measures intrarater reliability study. Twenty-four patients with AIS between ages 10 and 17 years took part in the study. Two and 3 repeated SWE measurements were recorded in the supine resting position and during isometric contraction, respectively. Two sessions were performed with a 7-day interval.
By using the mean of 2 measures in the supine, resting position, intraexaminer reliability point estimates (intraclass correlation coefficient [ICC]) ranged from 0.75 to 0.84 for external oblique, internal oblique, and transversus abdominis muscles. During the isometric contraction, the ICC results ranged from 0.70 to 0.83. The ICC results for muscle thicknesses in both conditions ranged from 0.89 to 0.96.
Measurements of LAM elasticity are reliable in patients with AIS. The superficial fat layer did not influence the measurement error between 2 sets of measurements in the examined adolescent population. The images extracted from SWE can successfully be used to assess LAM thicknesses with high reliability.
迄今为止，尚未有研究评估特发性脊柱侧凸（AIS）青少年患者横向腹肌（LAMs）的剪切波弹性成像（SWE）测量的可靠性。本研究旨在评估 SWE 及 LAMs 在休息和等长收缩（最大自主收缩的 10%）时的测量的内部观察者可靠性。
这是一项单组、重复测量的内部观察者可靠性研究。24 例年龄在 10 至 17 岁的 AIS 患者参与了本研究。分别在仰卧休息位和等长收缩时记录了 2 次和 3 次重复 SWE 测量。两次检查之间间隔 7 天。
在仰卧位休息时，使用 2 次测量的平均值，外部斜肌、内部斜肌和横腹肌的内部观察者可靠性点估计值（组内相关系数 [ICC]）范围为 0.75 至 0.84。在等长收缩时，ICC 结果范围为 0.70 至 0.83。两种情况下的肌肉厚度的 ICC 结果范围为 0.89 至 0.96。
AIS 患者的 LAM 弹性测量具有可靠性。在被检查的青少年人群中，浅层脂肪层不会影响两组测量之间的测量误差。从 SWE 提取的图像可以成功用于评估 LAM 厚度，具有很高的可靠性。
