高级检索+

膝关节骨性关节炎的声发射动态检测

Dynamic Detection of Knee Osteoarthritis by Acoustic Emission

  • 摘要: 膝关节骨性关节炎(knee osteoarthritis, KOA)是一种慢性疾病,其前期的及时诊断尤为重要。目前,常用的诊断方法包括关节镜、X射线和核磁共振成像法,但是这些诊断方法都是在膝关节处于静止状态下对其进行检测。本研究基于声发射(acoustic emission, AE)检测系统和膝关节角度数据采集系统,搭建了KOA动态检测平台,实现了对膝关节的动态检测。通过运动过程中的瞬时角速度变化将单个“坐–立–坐运动”分为4个运动阶段,研究了4个运动阶段AE事件数量和AE幅值累计出现概率,并将健康组和KOA组做了对比分析。KOA组AE事件数量均明显大于健康组;AE幅值整体水平KOA组高于健康组;相对于其他运动阶段,减速下降阶段的声发射信号数量和幅值更具有研究意义。这验证了声发射系统对膝关节骨性关节炎动态检测的有效性,能够为骨性关节炎的前期诊断提供一定的启发。

     

    Abstract: Knee osteoarthritis(KOA) is a chronic disease, and early diagnosis is particularly important. At present,common diagnostic methods include arthroscopy, X-ray and magnetic resonance imaging, but these diagnostic methods are all used to detect the knee joint when it is still. In this study, based on the acoustic emission(AE) detection system and the knee joint angle data acquisition system, a KOA dynamic detection platform is built to realize the dynamic detection of the knee joint. According to the change of instantaneous angular velocity during the movement, the single sitting-standing-sitting movement is divided into four stages. The number of AE events and the cumulative probability of AE amplitude in the four movement are studied, and a comparative analysis is made between the healthy group and the control group. The number of AE events in control group are significantly higher than that in healthy group. The overall level of AE amplitude in control group are higher than that in healthy group. Compared with other motion stages, the number and amplitude of AE signals in the deceleration descent stage are of more research significance. This verified the effectiveness of the acoustic emission system for the dynamic detection of knee osteoarthritis, which can provide some inspiration for the early diagnosis of osteoarthritis.

     

/

返回文章
返回