Vibration-based fixation assessment of tibial knee implants: A combined in vitro and in silico feasibility study
Vibration-based fixation assessment of tibial knee implants: A combined in vitro and in silico feasibility study
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DOI：
10.1016/j.medengphy.2017.08.007
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发表时间：
2017-11-01
影响因子：
2.2
通讯作者：
Sloten, Jos Vander
中科院分区：
文献类型：
--
作者：
Leuridan, Steven;Goossens, Quentin;Sloten, Jos Vander
骨水泥型胫骨膝关节植入物松动的术前诊断具有挑战性。本可行性研究探索了基于振动的方法作为替代诊断技术的基本潜力，以评估骨水泥型胫骨植入物的固定状态并确定该方法的灵敏度限值。采用体外和计算机模拟相结合的方法。模拟了几个松动病例。在1500 Hz以上的频率范围内获得的振动行为的最大变化。用频率响应函数和功率谱密度带功率两个特征来描述振动行为。使用这两个特征，所有实验模拟松动病例都可以与完全骨水泥病例明确区分开来。通过使用计算机模拟研究补充实验工作，结果表明，使用基于振动的方法可检测到外侧和内侧约14%的植入物表面松动。胫骨上的近端外侧和内侧位置或沿纵向测量的朝向植入物表面边缘的位置是评估植入物固定的最敏感测量和激励位置。这些结果有助于开发基于振动的方法，作为检测胫骨植入物松动的替代随访方法。(C)2017年IPEM。由爱思唯尔有限公司出版。保留所有权利。
The preoperative diagnosis of loosening of cemented tibial knee implants is challenging. This feasibility study explored the basic potential of a vibration-based method as an alternative diagnostic technique to assess the fixation state of a cemented tibia implant and establish the method's sensitivity limits. A combined in vitro and in silico approach was pursued. Several loosening cases were simulated. The largest changes in the vibrational behavior were obtained in the frequency range above 1500 Hz. The vibrational behavior was described with two features; the frequency response function and the power spectral density band power. Using both features, all experimentally simulated loosening cases could clearly be distinguished from the fully cemented cases. By complementing the experimental work with an in silico study, it was shown that loosening of approximately 14% of the implant surface on the lateral and medial side was detectable with a vibration-based method. Proximal lateral and medial locations on the tibia or locations toward the edge of the implant surface measured in the longitudinal direction were the most sensitive measurement and excitation locations to assess implant fixation. These results contribute to the development of vibration-based methods as an alternative follow-up method to detect loosened tibia implants. (C) 2017 IPEM. Published by Elsevier Ltd. All rights reserved.