A Glove-Based Form Factor for Collecting Joint Acoustic Emissions: Design and Validation
A Glove-Based Form Factor for Collecting Joint Acoustic Emissions: Design and Validation
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DOI：
10.3390/s19122683
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发表时间：
2019-06-02
期刊：
影响因子：
3.9
通讯作者：
Inan, Omer T.
中科院分区：
文献类型：
--
作者：
Bolus, Nicholas B.;Jeong, Hyeon Ki;Inan, Omer T.
由关节发音产生的声音已被证明包含潜在关节健康、形态和负荷的信息特征。在这项工作中，我们探讨了使用一种新的形状因子的非侵入性采集声/振动信号从膝关节：一个装有指尖安装加速度计的仪表手套。我们验证了手套为基础的方法，通过比较它与传统的安装技术（磁带和泡沫麦克风垫），在实验框架先前显示可靠地改变健康的膝关节的声音（垂直腿压）。在这项概念验证研究中，健康受试者（N = 11）的测量结果表明，在所有三种技术中，随着垂直载荷的增加，低频信号均方根（RMS）振幅（一种与关节磨削光洁度相关的直接度量）高度一致、单调且显著（p < 0.01）增加。这一发现表明，基于手套的方法是收集关节声音的合适替代方案，无需使用胶带等耗材以及与之相关的接口噪声。
Sounds produced by the articulation of joints have been shown to contain information characteristic of underlying joint health, morphology, and loading. In this work, we explore the use of a novel form factor for non-invasively acquiring acoustic/vibrational signals from the knee joint: an instrumented glove with a fingertip-mounted accelerometer. We validated the glove-based approach by comparing it to conventional mounting techniques (tape and foam microphone pads) in an experimental framework previously shown to reliably alter healthy knee joint sounds (vertical leg press). Measurements from healthy subjects (N = 11) in this proof-of-concept study demonstrated a highly consistent, monotonic, and significant (p < 0.01) increase in low-frequency signal root-mean-squared (RMS) amplitude-a straightforward metric relating to joint grinding loudness-with increasing vertical load across all three techniques. This finding suggests that a glove-based approach is a suitable alternative for collecting joint sounds that eliminates the need for consumables like tape and the interface noise associated with them.