Inertial Tracking System for Monitoring Dual Mobility Hip Implants In Vitro.
Inertial Tracking System for Monitoring Dual Mobility Hip Implants In Vitro.
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DOI：
10.3390/s23020904
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发表时间：
2023-01-12
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影响因子：
--
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双动（DM）植入物越来越多地用于全髋关节置换术，因为它们比传统植入物类型提供了更多的活动范围和关节稳定性。目前，没有报告的方法来监测他们的运动在现实的操作条件下，而在体外，因此，这是具有挑战性的预测他们将如何在临床相关条件下的功能和可能存在的故障模式。本研究报告了直接安装到DM植入物移动的内衬上的新型惯性跟踪系统的开发、校准和确认。该跟踪器是定制的，基于小型化的现成惯性测量单元（IMU），并采用梯度下降传感器融合算法，将九个自由度的IMU读数合并为三轴方向估计。此外，一种新的方法，磁干扰缓解使用固定螺线管和磁场模拟进行了评估。在理想条件下，系统产生的方向测量值与真实值相差在1.0°以内，在体外、浸没在润滑剂中且没有视线时，系统产生的方向测量值与真实值相差3.9°，漂移可忽略不计。
Dual mobility (DM) implants are being increasingly used for total hip arthroplasties due to the additional range of motion and joint stability they afford over more traditional implant types. Currently, there are no reported methods for monitoring their motions under realistic operating conditions while in vitro and, therefore, it is challenging to predict how they will function under clinically relevant conditions and what failure modes may exist. This study reports the development, calibration, and validation of a novel inertial tracking system that directly mounts to the mobile liner of DM implants. The tracker was custom built and based on a miniaturized, off-the-shelf inertial measurement unit (IMU) and employed a gradient-decent sensor fusion algorithm for amalgamating nine degree-of-freedom IMU readings into three-axis orientation estimates. Additionally, a novel approach to magnetic interference mitigation using a fixed solenoid and magnetic field simulation was evaluated. The system produced orientation measurements to within 1.0° of the true value under ideal conditions and 3.9° with a negligible drift while in vitro, submerged in lubricant, and without a line of sight.
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影响因子：
4.3
作者：
Ghanipoor, Farhad;Hashemi, Mojtaba;Salarieh, Hassan
通讯作者：
Salarieh, Hassan
DOI：
10.1109/icorr.2011.5975346
发表时间：
2011-01-01
期刊：
IEEE ... International Conference on Rehabilitation Robotics : [proceedings]
影响因子：
--
作者：
Madgwick, Sebastian O H;Harrison, Andrew J L;Vaidyanathan, Andrew
通讯作者：
Vaidyanathan, Andrew
影响因子：
4.3
作者：
Chen, Hong;Yang, Zhecheng;Wang, Zhihua
通讯作者：
Wang, Zhihua
影响因子：
2.2
作者：
Damm, Philipp;Graichen, Friedmar;Bergmann, Georg
通讯作者：
Bergmann, Georg
影响因子：
2.9
作者：
Strohmeier, Michael;Montenegro, Sergio
通讯作者：
Montenegro, Sergio