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无水泥关节内置假肢的微线程茎的表面的表征

Drago Dolinar^1,2, Boštjan Kocjančič^1,2, Klemen Avsec^1,2

¹Department for Orthopaedic Surgery, University Medical Centre Ljubljana, Zaloška 9, 1000 Ljubljana, Slovenia.

Materials (Basel, Switzerland)

|June 19, 2024

概括

部植入物中的陶头可以减少缩腐蚀,降低过早失败和感染的风险. 这项研究分析了茎的收缩表面,以了解对无水泥关节内置假肢的腐蚀影响.

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
材料工程材料工程材料工程

背景情况:

无水泥关节内置假体的过早失败通常与模块化缩腐蚀有关.
了解微线程茎的收缩表面对于改善植入物寿命至关重要.

研究的目的:

调查微线程茎的表面特性对过早失效,无菌松动和感染的影响.
分析头茎缩界面上的纹和裂纹腐蚀,特别是金属和陶部件.

主要方法:

使用SEM,EDS和EBSD对新的和获取的Zweymüller茎的微结构和表面特性进行表征.
光学造型测量用于测量微线程茎的粗度参数 (Ra,Rz).
电化学研究,包括汉克溶液中的潜在动力学测量,以评估腐蚀率.

主要成果:

在采集的带有陶头的茎缩器中没有观察到蚀腐蚀.
新的和无菌松散的采集样本的腐蚀率很低.
受感染和低级受感染的缩表现出更高的腐蚀率.

结论:

在关节整形术中使用陶头似乎可以减少状腐蚀.
减少缩腐蚀可能随后减少关节整形手术过早失败的发生率.

关键词:

Ti 植入物合金合金植入物合金腐蚀腐蚀是一种腐蚀.微观结构的微观结构树干微线螺纹的状状.渐的表面形态渐的表面形态整体关节整形术

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