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首页> 外文期刊>Journal of Biomechanics >A non-invasive acoustic and vibration analysis technique for evaluation of hip joint conditions.
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A non-invasive acoustic and vibration analysis technique for evaluation of hip joint conditions.

机译：一种用于评估髋关节状况的非侵入性声学和振动分析技术。

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摘要

The performance evaluation of THA outcome is difficult and surgeons often use invasive methods to investigate effectiveness. A non-invasive acoustic and vibration analysis technique has recently been developed for more-in-depth evaluation of in vivo hip conditions. Gait kinematics, corresponding vibration and sound measurement of five THA subjects were analyzed post-operatively using video-fluoroscopy, sound and accelerometer measurements while walking on a treadmill. The sound sensor and a pair of tri-axial accelerometers, externally attached to the pelvic and femoral bone prominences, detected frequencies that are propagated through the femoral head and acetabular cup interactions. A data acquisition system was used to amplify the signal and filter out noise generated by undesired frequencies. In vivo kinematics and femoral head sliding quantified using video fluoroscopy were correlated to the sound and acceleration measurements. Distinct variations between the different subjects were identified. A correlation of sound and acceleration impulses with separation has been achieved. Although, in vivo sounds are quite variable in nature and all correlated well with the visual images. This is the first study to document and correlate visual and audible effects of THA under in-vivo conditions. This study has shown that the development of the acoustic and vibration technique provides a practical method and generates new possibilities for a better understanding of THA performance.
机译：THA结果的绩效评估很困难，并且外科医生经常使用侵入性方法来调查有效性。最近已经开发了一种非侵入性的声学和振动分析技术，用于对体内髋关节状况进行更深入的评估。五个THA受试者的步态运动学，相应的振动和声音测量在手术后使用视频荧光检查，声音和加速度计测量在跑步机上行走时进行了分析。声音传感器和一对外部连接到骨盆和股骨突出处的三轴加速度计，检测通过股骨头和髋臼杯相互作用传播的频率。使用数据采集系统来放大信号并滤除不希望的频率产生的噪声。使用视频荧光透视法定量的体内运动学和股骨头滑动与声音和加速度测量值相关。确定了不同受试者之间的明显差异。已经实现了声音和加速度脉冲与分离的相关性。虽然，体内的声音在本质上是非常可变的，并且都与视觉图像具有良好的相关性。这是第一个记录和关联THA在体内条件下的视觉和听觉效果的研究。这项研究表明，声学和振动技术的发展提供了一种实用的方法，并为更好地了解THA性能提供了新的可能性。

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