Department of Physical and Rehabilitation Medicine, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Republic of Korea.
Department of Physical Therapy, Graduate School of Sahmyook University, Seoul, Republic of Korea.
PM R. 2020 Apr;12(4):374-381. doi: 10.1002/pmrj.12227. Epub 2019 Nov 4.
Patients with breast cancer typically experience changes in the properties of muscles around the shoulder. However, there is no appropriate evaluation tool for these changes.
The primary objective was to investigate the inter-rater and intra-rater reliability of muscle-related parameters measured by the MyotonPRO, a myotonometer device. The secondary objective was to investigate differences in properties of muscle around the shoulder between the mastectomy side and the other side.
Cross-sectional reliability study.
Outpatient clinic in a tertiary care university-affiliated hospital.
Twenty-two patients with breast cancer who underwent mastectomy.
Muscle tone, stiffness, and elasticity of the pectoralis major (PM), sternocleidomastoid (SCM), and upper trapezius (UT) were measured using the MyotonPRO. Rater 1 performed two sets of measurements with a time interval of 30 minutes to determine intra-rater reliability. Rater 2 performed measurements during the interval between the two sets of rater 1. Reliability was assessed using intraclass correlation coefficients (ICCs) and Bland-Altman analysis. A paired t-test was used to compare muscle properties between the affected and unaffected sides.
Frequency (tone, Hz), stiffness (N/m), and decrement (elasticity).
Intra-rater reliability was excellent (ICC > 0.75, 0.85-0.98) for all parameters of the PM, SCM, and UT in the affected and unaffected upper limbs of patients with breast cancer. Inter-rater reliability was fair to excellent for all parameters except unaffected PM elasticity (ICC = 0.34). There were significant differences in all parameters of the PM between the affected and unaffected sides. There were no significant differences in the parameters of the SCM and UT between the two sides.
Our findings indicate that the MyotonPRO device is a feasible tool to quantify PM, UT, and SCM muscle properties (stiffness, tone, and elasticity) in patients with breast cancer.
III.
患有乳腺癌的患者通常会经历肩部周围肌肉特性的变化。但是，目前还没有针对这些变化的适当评估工具。
主要目的是研究肌电刺激仪（MyotonPRO）测量的肌肉相关参数的组内和组间可靠性。次要目的是研究乳腺癌患者患侧和健侧肩部周围肌肉特性的差异。
横断面可靠性研究。
一家三级护理大学附属医院的门诊诊所。
22 名接受乳腺癌根治术的患者。
使用 MyotonPRO 测量胸大肌（PM）、胸锁乳突肌（SCM）和上斜方肌（UT）的肌肉张力、僵硬度和弹性。评估者 1 在 30 分钟的时间间隔内进行两组测量，以确定组内可靠性。评估者 2 在评估者 1 的两组测量之间进行测量。使用组内相关系数（ICC）和 Bland-Altman 分析评估可靠性。使用配对 t 检验比较患侧和健侧的肌肉特性。
频率（音调，Hz）、僵硬度（N/m）和衰减（弹性）。
乳腺癌患者患侧和健侧上肢的 PM、SCM 和 UT 的所有参数的组内可靠性均为优（ICC>0.75，0.85-0.98）。除健侧 PM 弹性外（ICC=0.34），所有参数的组间可靠性均为良至优。PM 的所有参数在患侧和健侧之间均有显著差异。SCM 和 UT 的参数在两侧之间没有显著差异。
我们的研究结果表明，MyotonPRO 设备是一种可行的工具，可用于量化乳腺癌患者 PM、UT 和 SCM 肌肉特性（僵硬度、音调、弹性）。
III。
