FINITE ELEMENT ANALYSIS OF FEMORAL PROSTHESIS UNDER TRANSIENT LOADING FOR MULTIPLE ACTIVITIES OF DAILY LIVING

IF 0.6 Q4 ENGINEERING, BIOMEDICAL

Biomedical Engineering: Applications, Basis and Communications Pub Date : 2022-02-28 DOI:10.4015/s1016237222500168

Rabiteja Patra, Shreeshan Jena, Harish Chandra Das, Asita Kumar Rath

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Abstract

The femoral prostheses experience versatile loading during the activities of daily living (ADL) and subsequently encounter a variety of stresses. This paper presents a detailed finite element analysis (FEA) of the femoral implant under transient loading. The distinct loading patterns corresponding to the most commonly occurring ADL are utilized for simulating the different scenarios. The CT reconstructed CAD model of the human femur bone assembled with a femoral implant is utilized for this study. The loading scenarios for walking, stair ascent, stair descent, standing up, sitting down, standing on one leg and knee bending are simulated by using the joint reaction forces and moments, corresponding to a body weight of 750 N, for the FEA. The results of this study are validated using a preliminary in-house built experimental setup comprising a fixture for a stainless steel femoral implant with sensors attached at three locations on the implant. The results indicate that the highest stresses are generated in case of the stair descent, stair ascent and standing on a single leg type of activities. These activities that generate high stresses on the implant surfaces are not suitable for the longevity of the implant and are therefore not advisable for post-operative patients.

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股骨假体在多种日常活动瞬时载荷下的有限元分析

股骨假体在日常生活活动(ADL)中经历多种负荷，随后遇到各种应力。本文对股骨假体在瞬态载荷下进行了详细的有限元分析。与最常见的ADL相对应的不同加载模式用于模拟不同的场景。本研究使用的是带股骨植入物的人股骨的CT重建CAD模型。采用人体重量为750 N时的关节反作用力和力矩，模拟了行走、上楼梯、下楼梯、站立、坐下、单腿站立和膝盖弯曲的加载场景。本研究的结果通过一个初步的内部实验装置进行验证，该装置包括一个不锈钢股骨植入物的固定装置，在植入物的三个位置连接有传感器。结果表明，下楼梯、上楼梯和单腿站立时产生的应力最大。这些对种植体表面产生高应力的活动不适合种植体的寿命，因此不建议术后患者使用。

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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来源期刊

Biomedical Engineering: Applications, Basis and Communications Biochemistry, Genetics and Molecular Biology-Biophysics

CiteScore

1.50

自引率

11.10%

发文量

审稿时长

4 months

期刊介绍： Biomedical Engineering: Applications, Basis and Communications is an international, interdisciplinary journal aiming at publishing up-to-date contributions on original clinical and basic research in the biomedical engineering. Research of biomedical engineering has grown tremendously in the past few decades. Meanwhile, several outstanding journals in the field have emerged, with different emphases and objectives. We hope this journal will serve as a new forum for both scientists and clinicians to share their ideas and the results of their studies. Biomedical Engineering: Applications, Basis and Communications explores all facets of biomedical engineering, with emphasis on both the clinical and scientific aspects of the study. It covers the fields of bioelectronics, biomaterials, biomechanics, bioinformatics, nano-biological sciences and clinical engineering. The journal fulfils this aim by publishing regular research / clinical articles, short communications, technical notes and review papers. Papers from both basic research and clinical investigations will be considered.