This brief review article was conducted to summarize the findings regarding correlation and agreement between different methods to assess muscle stiffness (shear wave elastography (SWE), myotonometry, and passive joint stiffness measurements). Muscle stiffness, an important biomechanical characteristic, influences joint flexibility, postural stability, injury risk, and athletic performance. SWE provides insights into tissue elasticity by measuring the propagation speed of shear waves, while myotonometry assesses stiffness through induced muscle oscillations. Passive joint stiffness measurements offer a holistic perspective, capturing the resistance of the entire joint to movement. However, distinguishing the contributions of muscular and non-muscular tissues remains a challenge in this method. The article highlights the variability in the correlation between these methodologies, influenced by factors such as muscle length, age, and examiner technique. While some studies report good agreement between SWE and myotonometry, others note discrepancies, underscoring the need for careful method selection based on the research or clinical context. This review highlights the complexity of assessing muscle stiffness and the necessity of a nuanced approach in interpreting data from different measurement techniques, aiming to guide researchers and clinicians in their choice of method for a precise and accurate evaluation of muscle stiffness.

这篇简短的综述文章旨在总结有关评估肌肉刚度的不同方法（剪切波弹性成像（SWE）、肌张力测量和被动关节刚度测量）之间的相关性和一致性的研究结果。肌肉僵硬是一个重要的生物力学特征，影响关节灵活性、姿势稳定性、受伤风险和运动表现。SWE 通过测量剪切波的传播速度来深入了解组织弹性，而肌张力测量则通过诱发肌肉振荡来评估硬度。被动关节刚度测量提供了整体视角，捕获整个关节运动的阻力。然而，区分肌肉组织和非肌肉组织的贡献仍然是该方法的一个挑战。本文强调了这些方法之间相关性的可变性，受肌肉长度、年龄和检查者技术等因素的影响。虽然一些研究报告 SWE 和肌张力测量法之间具有良好的一致性，但其他研究则指出了差异，强调需要根据研究或临床背景仔细选择方法。本综述强调了评估肌肉硬度的复杂性以及采用细致入微的方法解释不同测量技术数据的必要性，旨在指导研究人员和临床医生选择精确评估肌肉硬度的方法。