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移动轴承在侧侧单膝关节置换中脱的机制

Irene Yang¹, Greta Agustoni¹, David W Murray¹

¹Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine

|September 30, 2023

概括

在膝关节置换中,移动轴承的脱可以通过仔细的手术定位来预防. 外科医生应该确保部件靠近骨壁,并与后皮质保持一致,以最大限度地降低脱位风险.

科学领域:

整形外科手术整形外科手术
生物机械工程生物机械工程

背景情况:

移动轴承脱是牛津圆顶侧面置换的已知并发症,发生在1-6%的病例中.
脱位主要发生在中间,经常发生在膝盖曲过程中,预防策略尚不清楚.

研究的目的:

研究导致膝关节置换手术中移动轴承脱的生物力学因素.
确定防止移动轴承在曲过程中脱的方法.

主要方法:

一个更新的机械设备被用来模拟移动轴承脱,膝盖在曲.
引入了脱位类型的子类别,并测量了脱位所需的分心量.

主要成果:

只有当侧被分散时,才有可能发生脱.
中部"边缘"脱,是最常见的类型,需要最少的分心.
后侧悬架和部件的位置影响了所需的分心程度.

结论:

移动轴承的脱取决于侧面的分心.
为了最大限度地降低风险,外科医生应该将部件放置在靠近壁的地方,而不会堵塞,并确保部部件与后皮层保持一致.
如果在手术期间易于诱导脱位,请考虑固定轴承植入物.

关键词:

单隔膜膝关节置换术是一种单隔膜膝关节置换术.植入物设计植入物设计植入物设计侧面膝盖侧面的膝盖机械钻机机械钻机机械钻机机械移动轴承的位移移动轴承的位移

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