利用有限元分析和不同的 MCDM 方法,对用于 TAR 的锥形柄胫骨植入物进行设计修改并选择改进的柄设计。

IF 1.7 4区 医学 Q3 ENGINEERING, BIOMEDICAL Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine Pub Date : 2024-08-01 Epub Date: 2024-08-20 DOI:10.1177/09544119241272839
Jyoti, Rajesh Ghosh
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引用次数: 0

摘要

全踝关节置换术(TAR)的锥形柄胫骨设计具有较高的植入物-骨微动。这可能导致无菌性松动,而改进胫骨设计可以避免这种情况。我们的目标是采用有限元-多标准决策(FE-MCDM)综合方法,提出最佳的茎干设计参数,以减少植入物与骨之间的微动,同时最大限度地减少应力屏蔽。通过改变骨干高度、骨干直径和骨干斜度,制备了植入胫骨的有限元模型。研究考虑了加权汇总乘积评估(WASPAS)、与理想方案相似度排序技术(TOPSIS)、基于平均方案距离的评估(EDAS)以及微动和应力屏蔽权重相等的 VIseKriterijumska Optimizacija I Kompromisno Resenje(VIKOR)MCDM 技术。当茎杆高度增加时,微动和应力屏蔽的影响更大。而直径和斜度的增加对它们的影响很小。茎杆高度为 6 毫米(直径为 6.4 毫米,斜度为 4°)的模型是性能最好的设计,其次是茎杆高度为 8 毫米(直径为 6.4 毫米,斜度为 4°)的模型,然后是茎杆高度为 10 毫米(直径为 6.4 毫米,斜度为 4°)的模型。茎杆高度是最重要的茎杆设计参数。建议采用高度较短、厚度适中、倾斜度适中的阀杆设计。
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Design modification and selection of improved stem design of the conical stem tibial implant for TAR using FE analysis and different MCDM methods.

The conical stem tibial design of total ankle replacement (TAR) has high implant-bone micromotion. This may lead to aseptic loosening which can be avoided by improving the tibial design. The objective was to propose the best stem design parameters to reduce implant-bone micromotion along with minimizing stress shielding using an integrated Finite Element-Multi Criteria Decision Making (FE-MCDM) approach. FE models of implanted tibia bones were prepared by changing the height of the stem, the diameter of the stem, and the slant of the stem. Weighted Aggregated Sum Product Assessment (WASPAS), Technique for Order of Preference by Similarities to Ideal Solution (TOPSIS), Evaluation based on Distance from Average Solution (EDAS), and VIseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR) MCDM techniques with equal weights for micromotion and stress shielding were considered. The micromotion and stress shielding were greater when the height of the stem was increased. Whereas, the increase in diameter and slant affected them marginally. The best-performing design was the Model with stem height 6 mm (diameter 6.4 mm and slant 4°) and after that was the Model with stem height 8 mm (diameter 6.4 mm and slant 4°), and then the Model with stem height 10 mm (diameter 6.4 mm and slant 4°). The height of the stem is the most important stem design parameter. Shorter height, moderate thickness, and moderate slanting stem designs are recommended.

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来源期刊
CiteScore
3.60
自引率
5.60%
发文量
122
审稿时长
6 months
期刊介绍: The Journal of Engineering in Medicine is an interdisciplinary journal encompassing all aspects of engineering in medicine. The Journal is a vital tool for maintaining an understanding of the newest techniques and research in medical engineering.
期刊最新文献
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