利用振动分析评估经股骨-植入物界面特性

IF 3 2区 医学 Q3 ENGINEERING, BIOMEDICAL Annals of Biomedical Engineering Pub Date : 2024-07-08 DOI:10.1007/s10439-024-03561-6
Mostafa Mohamed, Eric Beaudry, Ahmed W. Shehata, Donald Raboud, Jacqueline S. Hebert, Lindsey Westover
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引用次数: 0

摘要

评估骨结合经股骨(TFA)植入物的骨植入界面(BII)特性对于早期失效检测和康复过程中的负荷规定非常重要。这项工作的目的是推导并验证骨结合假肢(OPL)TFA 系统的一维有限元(FE)模型,该模型可以(1) 建立动态行为模型,(2) 提取 BII 特性。该模型通过以下方式进行验证(1) 将简化圆柱体的一维 FE 计算结果与分析和三维 FE 解决方案进行比较;(2) 使用一维和三维 FE 模型比较实际 TFA 几何形状的振动模式;(3) 使用三维 FE 和实验信号(使用不同粘合剂将植入物嵌入合成股骨)评估三种极端条件(低、中、高)下的 BII 特性,以进行额外验证。一维 FE 模型预测的模式与圆柱体的分析和三维 FE 解决方案趋同。对于 TFA 几何结构,一维模型也与三维 FE 解决方案相吻合,最大频率差为 2.02%。最后,一维模型提取了使用三维 FE 模拟和实验 INTERMEDIATE 和 HIGH 信号生成的三种条件下的 BII 刚度和系统阻尼特性。对于 TFA 几何结构,一维有限元和三维有限元解决方案之间的一致性表明,一维模型捕捉到了系统的动态行为。区分不同的 BII 条件表明,一维模型可用于对 TFA BII 特性进行无创临床评估。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Evaluation of the Transfemoral Bone–Implant Interface Properties Using Vibration Analysis

Evaluating the bone–implant interface (BII) properties of osseointegrated transfemoral (TFA) implants is important for early failure detection and prescribing loads during rehabilitation. The objective of this work is to derive and validate a 1D finite element (FE) model of the Osseointegrated Prosthetic Limb (OPL) TFA system that can: (1) model its dynamic behaviour and (2) extract the BII properties. The model was validated by: (1) comparing the 1D FE formulation to the analytical and 3D FE solutions for a simplified cylinder, (2) comparing the vibration modes of the actual TFA geometry using 1D and 3D FE models, and (3) evaluating the BII properties for three extreme conditions (LOW, INTERMEDIATE, and HIGH) generated using 3D FE and experimental (where the implant was embedded, using different adhesives, in synthetic femurs) signals for additional validation. The modes predicted by the 1D FE model converged to the analytical and the 3D FE solutions for the cylinder. The 1D model also matched the 3D FE solution with a maximum frequency difference of 2.02% for the TFA geometry. Finally, the 1D model extracted the BII stiffness and the system’s damping properties for the three conditions generated using the 3D FE simulations and the experimental INTERMEDIATE and HIGH signals. The agreement between the 1D FE and the 3D FE solutions for the TFA geometry indicates that the 1D model captures the system’s dynamic behaviour. Distinguishing between the different BII conditions demonstrates the 1D model’s potential use for the non-invasive clinical evaluation of the TFA BII properties.

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来源期刊
Annals of Biomedical Engineering
Annals of Biomedical Engineering 工程技术-工程:生物医学
CiteScore
7.50
自引率
15.80%
发文量
212
审稿时长
3 months
期刊介绍: Annals of Biomedical Engineering is an official journal of the Biomedical Engineering Society, publishing original articles in the major fields of bioengineering and biomedical engineering. The Annals is an interdisciplinary and international journal with the aim to highlight integrated approaches to the solutions of biological and biomedical problems.
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