Development of a modified-in vitro corrosion fatigue test rig for biodegradable load-bearing metallic implants

IF 5.2 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Measurement Pub Date : 2025-05-05 DOI:10.1016/j.measurement.2025.117765

Morteza Daavari , Mohammadreza Shooshtarian , Mojtaba Esmailzadeh , Masoud Atapour , Samaneh Hajihoseini , Carsten Blawert , Marta Mohedano , Endzhe Matykina , Raul Arrabal

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引用次数: 0

Abstract

Corrosion fatigue is a major factor leading to sudden failures in load-bearing orthopaedic implants, particularly in biodegradable ones that corrode more quickly than permanent implants.

In the current study, we developed a novel modified-in vitro corrosion fatigue (MICorF) rig that incorporates several key parameters—such as loading mode, blood buffering capacity, gradual bone healing processes, and the synchronization of corrosion and cyclic damage—aimed at closely mimicking in vivo conditions. The functionality of the MICorF was tested with an experimental extruded ZX00 (Mg-0.5Zn-0.5Ca) Mg alloy. The results showed that the ZX00 Mg alloy possesses a limited biomechanical performance. Based on the SEM micrographs, the presence of intermetallic particles in the alloy microstructure and the subsequent galvanic corrosion phenomena could be taken as the main cause of failure. According to the results yielded by the MICorF, the ZX00 alloy withstands at least 20 days under the studied physiological conditions and polarization corresponding to the pitting conditions.

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生物可降解承重金属植入物改良体外腐蚀疲劳试验台的研制

腐蚀疲劳是导致承重骨科植入物突然失效的主要因素，特别是生物可降解的植入物比永久性植入物腐蚀更快。在目前的研究中，我们开发了一种新型的改进的体外腐蚀疲劳（MICorF）钻机，该钻机结合了几个关键参数，如加载模式、血液缓冲能力、逐渐的骨愈合过程以及腐蚀和循环损伤的同步，旨在密切模仿体内条件。用实验挤压的ZX00 （Mg-0.5 zn -0.5 ca）镁合金测试了MICorF的功能。结果表明，ZX00镁合金具有有限的生物力学性能。SEM显微形貌分析表明，合金微观组织中金属间颗粒的存在及其产生的电偶腐蚀现象是导致失效的主要原因。根据MICorF的结果，ZX00合金在所研究的生理条件和与点蚀条件相对应的极化条件下，至少可以耐受20天。

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

Measurement 工程技术-工程：综合

CiteScore

10.20

自引率

12.50%

发文量

1589

审稿时长

12.1 months

期刊介绍： Contributions are invited on novel achievements in all fields of measurement and instrumentation science and technology. Authors are encouraged to submit novel material, whose ultimate goal is an advancement in the state of the art of: measurement and metrology fundamentals, sensors, measurement instruments, measurement and estimation techniques, measurement data processing and fusion algorithms, evaluation procedures and methodologies for plants and industrial processes, performance analysis of systems, processes and algorithms, mathematical models for measurement-oriented purposes, distributed measurement systems in a connected world.