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首页> 外文期刊>Gait & posture >Three-dimensional kinematics and kinetics of total knee arthroplasty during level walking using single plane video-fluoroscopy and force plates: a pilot study.
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Three-dimensional kinematics and kinetics of total knee arthroplasty during level walking using single plane video-fluoroscopy and force plates: a pilot study.

机译：使用单平面视频荧光透视法和测力板进行水平步行过程中全膝关节置换术的三维运动学和动力学：一项初步研究。

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摘要

The goal of the study was to simultaneously obtain accurate kinematic and kinetic data from a total knee arthroplasty (TKA) during level walking, by coupling force plate data with the kinematics of TKA measured by a movable video-fluoroscopic system. Kinematic and kinetic information of a TKA is crucial for the improvement of implant designs and for the increased longevity of the implant components. Instrumented gait analysis, with skin mounted marker tracking and force plates, is a well-established method for the acquisition of kinematic and kinetic data of TKA in vivo and for non-invasive estimation of joint function. However, resultant moments at the knee joint are inaccurate with this method, due to skin movement artifacts. Video-fluoroscopy reduces these inaccuracies by means of the direct tracking of the implant components with X-ray. However this measuring technique carries disadvantages: it provides only kinematic data, and the image intensifier covers a limited field of view. This paper presents a newly developed measuring technique, which enables a more accurate resultant moments calculation for level walking than could be achieved by conventional instrumented gait analysis.
机译：该研究的目的是通过将力板数据与可移动视频荧光镜系统测得的TKA运动学相结合，同时在水平行走过程中从全膝关节置换术（TKA）同时获得准确的运动学和动力学数据。 TKA的运动和动力学信息对于改进植入物设计和延长植入物部件的寿命至关重要。具有皮肤安装的标记物跟踪和测力板的仪器化步态分析是一种成熟的方法，用于在体内获取TKA的运动学和动力学数据以及对关节功能进行非侵入式评估。但是，由于皮肤运动伪影，此方法在膝关节处产生的力矩不准确。电子荧光透视法通过使用X射线直接跟踪植入物组件来减少这些不准确性。然而，这种测量技术具有缺点：它仅提供运动学数据，并且图像增强器覆盖有限的视野。本文介绍了一种新开发的测量技术，与传统的仪器步态分析相比，该技术能够更精确地计算出水平行走的合成力矩。

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