插入压力传感阵列对后足骨运动学的影响极小。
Insertion of a pressure sensing arrayminimally affects hindfoot bone kinematics.
作者信息
Natsakis Tassos, Burg Josefien, Dereymaeker Greta, Jonkers Ilse, Sloten Jos Vander
机构信息
Department of Mechanical Engineering, KU Leuven, Celestijnenlaan 300c, Box 2419, Heverlee, 3001 Belgium.
Department of Mechanical Engineering, KU Leuven, Celestijnenlaan 300c, Box 2419, Heverlee, 3001 Belgium ; Faculty of Kinesiology and Rehabilitation Science, KU Leuven, Tervuursevest 101, Box 1500, Heverlee, 3001 Belgium.
出版信息
J Foot Ankle Res. 2015 Jun 24;8:24. doi: 10.1186/s13047-015-0081-x. eCollection 2015.
BACKGROUND
Understanding the development of ankle osteoarthritis (OA) is of high importance and interest; however its causality is poorly understood and several links to joint loading conditions have been made. One way of quantifying joint loading conditions is by measuring the intra-articular pressure distribution during gait simulations performed by in-vitro experimental set-ups. However the effect of inserting a pressure sensing array in the ankle joint could potentially disturb the proper kinematics and therefore the loading conditions.
METHODS
In this study, we performed in-vitro gait simulations in 7 cadaveric feet, before and after inserting a pressure sensing array and quantified the effect on the joints range of motion (ROM). The gait was simulated with a stance phase duration of one second using a custom build cadaveric gait simulator (CGS).
RESULTS
The results show a limited effect in the ROM for all the joints of the hind foot, not exceeding the variability observed in specimens without a sensor. However, no consistent direction (increase/decrease) can be observed.
CONCLUSION
The results suggest that even though the effect of inserting a pressure sensing array is minimal, it needs to be evaluated against the demands/requirements of the application.
背景
了解踝关节骨关节炎（OA）的发展具有高度重要性和研究价值；然而，其病因仍知之甚少，且已建立了与关节负荷条件的多种联系。量化关节负荷条件的一种方法是通过体外实验装置在步态模拟过程中测量关节内压力分布。然而，在踝关节中插入压力传感阵列的影响可能会干扰正常的运动学，进而影响负荷条件。
方法
在本研究中，我们在7只尸体足上插入压力传感阵列前后进行了体外步态模拟，并量化了对关节活动范围（ROM）的影响。使用定制的尸体步态模拟器（CGS）模拟了持续一秒的站立相步态。
结果
结果表明，后足所有关节的ROM受影响有限，未超过未植入传感器标本中观察到的变异性。然而，未观察到一致的变化方向（增加/减少）。
结论
结果表明，尽管插入压力传感阵列的影响很小，但仍需根据应用的需求进行评估。
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