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大型关节不会增加10年后薄的第二代高交联聚乙烯层的磨损率

Stuart A Callary^1,2, Deepti K Sharma¹, Taisha M D'Apollonio²

¹Centre for Orthopaedic and Trauma Research, The University of Adelaide and Department of Orthopaedics and Trauma, Royal Adelaide Hospital, Adelaide, South Australia.

Bone & joint open

|November 5, 2023

概括

放射立体测量分析 (RSA) 显示,X3高交联聚乙烯 (XLPE) 层的磨损最小,部头较大,超过十年. 这表明这些部植入物组件的长期临床性能充满希望.

科学领域:

整形外科手术整形外科手术
生物材料科学是生物材料的科学.
放射学放射学是一门学科.

背景情况:

放射立体分析 (RSA) 是衡量体内乙骨部件磨损的黄金标准.
之前的研究报告了32毫米头的X3内的低磨损;较大头的长期数据是有限的.
高交联聚乙烯 (XLPE) 内旨在提高全关节整形术的耐磨性.

研究的目的:

为了评估使用RSA.与36或40毫米的股骨头相比,薄的X3 XLPE乙体内的十年体内磨损.
为了确定更大的股骨头大小是否会影响X3 XLPE内的磨损率.
评估这个特定的XLPE材料的长期磨损行为和临床性能.

主要方法:

对19名接受初级无水泥全关节整形手术的患者进行前性研究,使用X3 XLPE内和36/40毫米头.
在多个时间点进行了RSA测量,直至术后10年.
用UmRSA软件量化部头部透率,以计算磨损率.

主要成果:

从1年到10年的近接,二维和三维磨损率均低于0.005毫米/年.
没有患者超过0.021毫米/年近端磨损率.
在五年和十年后的跟踪点之间,磨损率没有增加.

结论:

当与更大的腿部头部尺寸 (36/40毫米) 使用时,X3 XLPE内显示出非常低的磨损率.
这些发现支持X3 XLPE在全关节整形术中的有利的长期临床性能.
材料的磨损特性对于未来的植入物寿命仍然令人鼓舞.

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