...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of orthopaedic research >Role of corrosion in taper failure and head disassociation in total hip arthroplasty of a single design
【24h】

Role of corrosion in taper failure and head disassociation in total hip arthroplasty of a single design

机译：单一设计锥形锥度锥度腐蚀的作用和头部脱离

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Modular junctions have been associated with corrosion in total hip arthroplasty. In a small number of cases, disassociation of the femoral head from the stem following gross wear of the taper has been reported. The purpose of this study was to investigate the role of corrosion in the development of mechanical changes leading to disassociation. Twenty-one retrieved stems and heads of one design previously reported with head disassociation were identified in an IRB-approved database. Components were scored for corrosion and measured for material loss. Stem alloy hardness was measured. Parametric and non-parametric statistics were performed (alpha 0.05). Seven of twenty-one stems demonstrated gross material loss of the stem taper and head disassociation. The maximum linear depth (MLD) of material loss on stem tapers without dissociation and all head bores was 7.63 +/- 6.04 and 63.76 +/- 60.83 mu m, respectively. Hardness of the stem material was statistically distinct, but similar to other stem materials. Results suggest material loss via corrosion at the head bore loosens the taper lock, allowing relative motion leading to abrasive wear of the stem taper. All cases of disassociation occurred at greater than 65 months with a minimum of 50 mu m of loss at on the head bore. It may be warranted to survey patients with systems reporting head disassociation; for this system, including recalled heads, risk appears to begin after 6 years in vivo. (c) 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:2996-3003, 2018.
机译：模块化交叉点与总髋关节置换术中的腐蚀有关。在少数病例中，报道了锥度粗糙磨损之后股骨头的股骨头的解剖。本研究的目的是探讨腐蚀在机械变化发展中的作用，导致脱差异。在IRB批准的数据库中确定了先前报告过头分离的一个设计的二十一茎和头部。分量被腐蚀和测量物质损失。测量茎合金硬度。进行参数和非参数统计（alpha <0.05）。二十一根茎中的七个表现出茎锥和头部脱离的总物质丧失。无解离的茎锥体上材料损失的最大线性深度（MLD）分别为7.63 +/- 6.04和63.76 +/- 60.83 mu m。茎材料的硬度在统计学上独特，但与其他茎材料类似。结果表明头部孔的腐蚀材料损失松散锥形锁，允许通往杆锥​​形磨损的相对运动。所有潜水病例发生在大于65个月的情况下，头部孔的损耗至少为50亩。可能有必要调查系统报告头分离的患者;对于该系统，包括召回的头部，风险似乎在体内6年后开始。 （c）2018年骨科研究会。由Wiley Hearyicals，Inc。J Orthop Res 36：2996-3003，2018。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号