Long Beach VA Medical Center, Section of Orthopaedic Surgery, Long Beach, California, USA.
J Arthroplasty. 2013 Feb;28(2):375.e5-8. doi: 10.1016/j.arth.2012.04.005. Epub 2012 Jun 15.
Modularity in arthroplasty components has increased options for solving complex issues in primary and revision procedures. However, this technology introduces the risk of accelerated metal ion release as a result of fretting or passive crevice corrosion within the Morse taper junction. Cobalt toxicity locally and systemically has been described with hip metal bearing surfaces and may be accentuated with ion release from Morse tapers. This is a case report of a knee adverse local tissue response lesion associated with corrosion within the Morse taper of a revision knee arthroplasty in the absence of systemic metal allergy.
关节置换组件的模块化增加了在初次手术和翻修手术中解决复杂问题的选择。然而，这项技术增加了由于莫氏锥度连接点的微动或被动缝隙腐蚀而加速金属离子释放的风险。髋关节金属承窝表面已经描述了钴毒性的局部和全身作用，并且可能由于莫氏锥度的离子释放而加重。这是一例与翻修膝关节置换术中莫氏锥度内腐蚀相关的膝关节不良局部组织反应病变的病例报告，无全身性金属过敏。
