Intraoperative Measurement of Pivot Shift by Electromagnetic Sensors
Intraoperative Measurement of Pivot Shift by Electromagnetic Sensors
复制标题
术中通过电磁传感器测量枢轴位移
DOI：
--
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
M. Kurosaka
中科院分区：
文献类型：
--
作者：
R. Kuroda;Y. Hoshino;K. Nagamune;S. Kubo;K. Nishimoto;Daisuke Araki;M. Yamaguchi;S. Yoshiya;M. Kurosaka
与静态载荷-位移测量不同，前交叉韧带（ACL）功能不全膝关节的动态不稳定性常采用平移试验评估，与主观膝关节功能相关。前交叉韧带重建后残余支点移位是临床疗效不佳的关键因素。然而，没有方法存在，可以用来评估枢轴转移定量和非侵入性。三维位置位移的常规测量不能评估体内的这种动态不稳定性并产生可比较的参数。为了定量评价位移试验，不仅要测量三维位移，而且要测量三维加速度。我们开发了一种新的非侵入性的在体测量系统，通过使用电磁传感器，它可以用来测量6个自由度的膝关节在高采样率（60 Hz）的位移测试。它可以监控瞬时3D位置位移并计算运动的3D加速度。这些测量结果可用于定量评估的动态不稳定性所证明的的位移测试。
The pivot-shift test is commonly used for assessing dynamic instability in anterior cruciate ligament (ACL)-insufficient knees and is related to subjective knee function, unlike static load-displacement measurement. Residual pivot shift after ACL reconstruction is a crucial factor related to poor clinical outcome. However, no method exists that can be used to evaluate pivot shift quantitatively and noninvasively. Conventional measurements of 3-dimensional position displacement cannot assess such dynamic instability in vivo and produce comparable parameters. Not only 3-dimensional (3D) position displacement but also its 3D acceleration should be measured for quantitative evaluation of the pivot-shift test. We developed a new noninvasive in vivo measurement system by using an electromagnetic sensor, which can be used to measure the 6 degrees of freedom of the knee during the pivot-shift test with a high sampling rate (60 Hz). It enables monitoring of instantaneous 3D position displacement and calculates a 3D acceleration of the motion. These measurements can be used for quantified evaluation of dynamic instability demonstrated by the pivot-shift test.
DOI：
10.1053/jars.2003.50084
发表时间：
2003-03-01
影响因子：
4.7
作者：
Loh, JC;Fukuda, Y;Woo, SLY
通讯作者：
Woo, SLY