现代仪器与医疗

高屈曲度假体在膝关节置换中的有限元生物力学研究

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陈功

现代仪器与医疗 | 医学工程 2025,31(3): 35-40

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现代仪器与医疗 |医学工程 2025 , 31 (3) : 35 -40

高屈曲度假体在膝关节置换中的有限元生物力学研究

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陈功，男，博士研究生，高级工程师，研究方向：医疗器械的虚拟设计与先进制造、智能AI机器人技术以及手术机器人

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陈功，男，博士研究生，高级工程师，研究方向：医疗器械的虚拟设计与先进制造、智能AI机器人技术以及手术机器人

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陈功

作者信息

常州信息职业技术学院，常州　213164

作者简介:

陈功，男，博士研究生，高级工程师，研究方向：医疗器械的虚拟设计与先进制造、智能AI机器人技术以及手术机器人

Finite element biomechanical analysis of high-flexion prostheses in knee arthroplasty

Gong Chen

Affiliations

Changzhou College of Information Technology, Changzhou 213164, China

出版时间: 2025-06-10 doi: 10.11876/mimt202503006

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摘要

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目的

深入分析高屈曲度膝关节假体与常规假体在力学性能上的差异，为优化假体设计及提高其临床应用效果提供参考。

方法

通过有限元分析方法，探究高屈曲度膝关节假体与常规股骨髁假体在力学性能上的差异，进而评估高屈曲度假体的特性及其临床应用价值。构建了股骨髁和胫骨垫片的三维模型，并在ANSYS环境下进行了全面分析。比较常规假体和高屈曲度假体在相同旋转中心和0°、15°、30°、60°、90°、120°、135°、150°不同角度条件下的加载情况，得出各种角度下的接触面积、最大接触应力以及最大冯氏等效应力值。

结果

在90°以下的屈曲角度中，高屈曲度假体与常规假体在力学性能上基本相近。然而，在大于120°屈曲角度的高屈曲度范围内，高屈曲度假体在仿真测试中展现出优越性能，具有更大的接触面积和更小的接触应力，证明了其设计的有效性。

结论

本研究的方法和发现可为高屈曲度膝关节假体的设计与制造提供参考。

关键词

膝关节置换 / 有限元分析 / 生物力学 / 高屈曲度

Abstract

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Objective

To conduct an in-depth analysis of the biomechanical differences between high-flexion and conventional knee prostheses, providing references for optimizing prosthetic design and enhancing clinical outcomes.

Methods

Finite element analysis (FEA) was employed to investigate the mechanical disparities between high-flexion and conventional femoral component prostheses. 3D models of the femoral condyle and tibial insert were constructed and comprehensively analyzed in ANSYS. The contact area, maximum contact stress, and peak von Mises stress were compared under identical rotation centers at flexion angles of 0°, 15°, 30°, 60°, 90°, 120°, 135°, and 150°.

Results

The study revealed comparable mechanical performance between high-flexion and conventional prostheses at flexion angles below 90°. However, in high-flexion regimes beyond 120°, the high-flexion prosthesis demonstrated superior performance in simulations, exhibiting larger contact areas and lower contact stresses, demonstrating the efficacy of its design.

Conclusion

The methodology and findings of this study provide valuable insights for the design and manufacturing of high-flexion knee prostheses.

Key words

Knee arthroplasty / Finite element analysis / Biomechanics / High flexion

引用本文

陈功. 高屈曲度假体在膝关节置换中的有限元生物力学研究. 现代仪器与医疗, 2025 , 31 (3) : 35 -40 . DOI: 10.11876/mimt202503006

Gong Chen. Finite element biomechanical analysis of high-flexion prostheses in knee arthroplasty[J]. Modern Instruments & Medical Treatment, 2025 , 31 (3) : 35 -40 . DOI: 10.11876/mimt202503006

参考文献

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2025年第31卷第3期

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doi: 10.11876/mimt202503006

首发时间：2026-10-23
出版时间：2025-06-10

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常州信息职业技术学院，常州　213164

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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