[一种新型膝关节生物力学测试方法的设计与验证]
[Design and validation of a novel knee biomechanical test method].
作者信息
Wang Junrui, Zhao Zhiping, Jiang Chengteng, Nie Chuang, Shi Quanxing, Liu Meng, Gu Jianwen
机构信息
Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100000, P. R. China.
Department of Orthopaedics, Chengdu Second People's Hospital, Chengdu 610000, P. R. China.
出版信息
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 2023 Dec 25;40(6):1185-1191. doi: 10.7507/1001-5515.202304042.
A novel structural dynamics test method and device were designed to test the biomechanical effects of dynamic axial loading on knee cartilage and meniscus. Firstly, the maximum acceleration signal-to-noise ratio of the experimental device was calculated by applying axial dynamic load to the experimental device under unloaded condition with different force hammers. Then the experimental samples were divided into non-specimen group (no specimen loaded), sham specimen group (loaded with polypropylene samples) and bovine knee joint specimen group (loaded with bovine knee joint samples) for testing. The test results show that the experimental device and method can provide stable axial dynamic load, and the experimental results have good repeatability. The final results confirm that the dynamic characteristics of experimental samples can be distinguished effectively by this device. The experimental method proposed in this study provides a new way to further study the biomechanical mechanism of knee joint structural response under axial dynamic load.
设计了一种新型结构动力学测试方法及装置，以测试动态轴向载荷对膝关节软骨和半月板的生物力学影响。首先，在空载条件下使用不同力锤对实验装置施加轴向动态载荷，计算实验装置的最大加速度信噪比。然后将实验样本分为非样本组（未加载样本）、假样本组（加载聚丙烯样本）和牛膝关节样本组（加载牛膝关节样本）进行测试。测试结果表明，该实验装置和方法能够提供稳定的轴向动态载荷，实验结果具有良好的重复性。最终结果证实，该装置能够有效区分实验样本的动态特性。本研究提出的实验方法为进一步研究轴向动态载荷下膝关节结构响应的生物力学机制提供了一种新途径。
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