Topological optimization of anterior cervical plate (ACP) and its biomechanic characteristics.

IF 1 4区医学 Q4 ENGINEERING, BIOMEDICAL

Bio-medical materials and engineering Pub Date : 2023-01-01 DOI:10.3233/BME-230019

Peng Ye, Rongchang Fu, Zhaoyao Wang

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引用次数: 0

Abstract

Background: Currently, quadrilateral anterior cervical plate (QACP) is a highly prevalent ACP.

Objective: This study aims to design a novel ACP using topology optimization (TOACP).

Methods: A completed model for C1-C7 cervical segments was established and validated. QACP and TOACP cage systems were implanted within two cervical vertebrae models, respectively, and peak stresses and stress distributions for screw, plate, endplate and cage displacement were investigated under differing exercise modes.

Results: Stress levels upon QACP screw were maximized for over-extension exercise (243.3 MPa, 3.35% > TOACP screw). Stress level upon TOACP plate was maximized for over-extension exercise (118.2 MPa, 7.26% > QACP screw). Following QACP cage system implantation, stress on endplate and cage displacement were maximized for extension exercise, which were 27.1%, and 6.3% > TOACP cage system, respectively. Finite element analysis results revealed that topological optimization of the plate can effectively reduce screw stress, thereby enhancing cervical segments' stability during surgery. Furthermore, stress on endplate and cage displacement decreased, indicating great potential in cage sinking and fusion enhancement.

Conclusions: Topological optimization of the plate equips the cage system with advantages in clinical applications and biomechanical performance, providing alternative solutions and a theoretical basis for ACP design.

查看原文本刊更多论文

颈椎前路钢板的拓扑优化及其生物力学特性。

背景:目前，qurilateral anterior cervical plate (QACP)是一种非常普遍的ACP。目的:设计一种基于拓扑优化的新型ACP。方法:建立完整的C1-C7颈椎节段模型并进行验证。QACP和TOACP笼系统分别植入两个颈椎模型，研究不同运动模式下螺钉、钢板、终板和笼位移的峰值应力和应力分布。结果:过伸运动时QACP螺钉的应力水平最大(243.3 MPa, 3.35% > TOACP螺钉)。过伸运动时TOACP钢板上的应力水平最大(118.2 MPa, 7.26% > QACP螺钉)。植入QACP笼系统后，终板应力和笼位移最大，分别为27.1%和6.3% > TOACP笼系统。有限元分析结果表明，对钢板进行拓扑优化可以有效降低螺钉应力，从而提高手术过程中颈椎节段的稳定性。此外，终板应力和笼体位移减小，表明笼体下沉和融合增强的潜力很大。结论:对钢板进行拓扑优化，使保持器系统在临床应用和生物力学性能方面具有优势，为ACP设计提供了替代方案和理论依据。

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

Bio-medical materials and engineering 工程技术-材料科学：生物材料

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： The aim of Bio-Medical Materials and Engineering is to promote the welfare of humans and to help them keep healthy. This international journal is an interdisciplinary journal that publishes original research papers, review articles and brief notes on materials and engineering for biological and medical systems. Articles in this peer-reviewed journal cover a wide range of topics, including, but not limited to: Engineering as applied to improving diagnosis, therapy, and prevention of disease and injury, and better substitutes for damaged or disabled human organs; Studies of biomaterial interactions with the human body, bio-compatibility, interfacial and interaction problems; Biomechanical behavior under biological and/or medical conditions; Mechanical and biological properties of membrane biomaterials; Cellular and tissue engineering, physiological, biophysical, biochemical bioengineering aspects; Implant failure fields and degradation of implants. Biomimetics engineering and materials including system analysis as supporter for aged people and as rehabilitation; Bioengineering and materials technology as applied to the decontamination against environmental problems; Biosensors, bioreactors, bioprocess instrumentation and control system; Application to food engineering; Standardization problems on biomaterials and related products; Assessment of reliability and safety of biomedical materials and man-machine systems; and Product liability of biomaterials and related products.