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骨和添加剂制造的Ti6Al4V植入物之间的摩擦行为受到骨密度和不同负载下的表面纹理的影响

Ali Abedi¹, Farzam Farahmand², Mohammadjavad Salmanimehrjardi¹

¹Mechanical Engineering Department, Sharif University of Technology, Tehran, Iran.

Scientific reports

|November 25, 2025

概括

这项研究测量了骨和3D打印植入物之间的摩擦系数. 更高的植入物粗度和更低的骨密度增加了摩擦,影响了最初的植入物稳定性.

科学领域:

生物材料科学生物材料科学
整形外科工程整形外科工程
部落学 (tribology) 是一个学科.

背景情况:

骨植入物接口的摩擦对于无形骨科植入物稳定性和骨质整合至关重要.
对于各种骨质和植入物表面纹理的摩擦系数 (COF) 存在有限的数据,特别是来自增材制造的数据.

研究的目的:

测量不同品质的人类无骨骨和增材制造的Ti6Al4V植入物表面之间的界面COF.
为了研究骨矿物质密度 (BMD),植入物表面粗度和正常应力对摩擦的影响.

主要方法:

使用三种人类无骨质素 (基于BMD) 和四种通过选择性激光化 (SLM) 生产的Ti6Al4V表面纹理进行了相互摩擦测试.
测试是在三个正常应力水平 (0.5,1.0,1.5 MPa) 下进行的.

主要成果:

观察到广泛的COFs (0.37-0.95) 的范围.
植入物表面粗度与COF有很强的正相关性 (P<0.05).
骨密度和正常压力与COF呈现中度负相关性 (P<0.05).
较低的骨密度和更尖的植入物纹理导致了更可变的摩擦.

结论:

选择性激光化 (SLM) 允许开发具有可调节COF的植入物.
根据患者特定的骨特性和生物力学需求量身定制植入物表面纹理,可以优化初始稳定性.

关键词:

这是一个三向ANOVA.尸体的腰部部部位是这样的摩擦量身定制摩擦量身定制宏观表面纹理宏观表面纹理微型表面纹理微型表面纹理定量计算断层扫描是一种量化计算断层扫描.选择性激光融技术选择性激光融技术

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