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Updated: Jun 19, 2025

Potentiodynamic Corrosion Testing

Potentiodynamic Corrosion Testing

Published on: September 4, 2016

膝盖中的-接点腐蚀,产生与部相似的损伤

Michael A Kurtz¹, Shabnam Aslani¹, James A Smith¹

¹Implant Research Core, School of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia, Pennsylvania.

The Journal of arthroplasty

|July 25, 2024

概括

腐蚀在-全膝关节整形术的圆结处普遍存在,反映了部植入物的损伤. 机械辅助的裂腐蚀是这种体内损伤的可能原因.

科学领域:

生物材料科学生物材料科学
整形外科手术整形外科手术
材料科学材料科学材料科学

背景情况:

全膝关节整形术 (TKA) 的模块化部件的腐蚀已知.
膝关节缩结处的损伤模式比关节整形了解得更少.
这项研究研究了-TKA连接处的腐蚀.

研究的目的:

为了研究具有-接口的TKA元件的腐蚀.
为了确定体内循环负荷是否会导致与关节整形术中看到的类似的合金损伤模式.
为了识别TKA形连接处的特定腐蚀损伤模式.

主要方法:

收集并分析了50对的合金足底板和茎.
使用戈德伯格腐蚀评分进行半定量分析.
使用扫描电子和数字光学显微镜切割和成像腐蚀的部件.

主要成果:

100个组件中的95%呈现出视觉腐蚀.
腐蚀始于茎/孔接触区域,通常距离的底部3毫米.
确定了四种损伤模式:氧化物薄膜形成,裂腐蚀,选择性溶解和插孔.

结论:

在TKA的曲结处发现的所有损伤模式之前都在关节整形检索研究中报告过.
结果表明机械辅助裂腐蚀是这种体内损伤的主要驱动因素.
这些发现强调了在模块化TKA设计中需要策略来减轻腐蚀的必要性.

关键词:

在Ti-6Al-4V中.腐蚀腐蚀是一种腐蚀.机械辅助的裂腐蚀是一种机械辅助的裂腐蚀.插入一个坑洞.修订复习复习复习复习整体膝关节关节整形手术

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