North Tees and Hartlepool NHS Trust, University Hospital of North Tees, Hardwick, Stockton-on-Tees, UK.
J Arthroplasty. 2010 Jun;25(4):607-13. doi: 10.1016/j.arth.2009.08.020. Epub 2009 Dec 21.
The use of large metal on metal bearings has led to a reduction in the risk of dislocation post hip arthroplasty. Because of this, and also because of the technical difficulties associated with resurfacing surgery in particular, it could be argued that a less meticulous approach to acetabular cup placement has developed in comparison with conventional metal on polyethylene arthroplasty. Resurfacing cups may produce significant clinical problems when placed at the extremes of version, including increased production of metal debris and psoas tendonitis. Presented in this article is evidence that EBRA software (Einzel-Bild-Roentgen-Analysis, University of Innsbruck, Austria) can be used to reliably assess the version of resurfacing cups, when radiographs are of sufficient quality. The cups have characteristic appearances when placed at the extremes of version. These characteristics can allow the surgeon to identify poorly positioned cups without the use of software.
使用大型金属对金属轴承可降低髋关节置换术后脱位的风险。正因为如此，并且由于特别是表面置换手术相关的技术难度，与传统的金属对聚乙烯关节置换相比，髋臼杯的放置可能已经发展出一种不那么精细的方法。当表面置换杯放置在角度的极限时，可能会产生显著的临床问题，包括增加金属碎片的产生和腰大肌腱炎。本文介绍的证据表明，EBRA 软件（Einzel-Bild-Roentgen-Analysis，奥地利因斯布鲁克大学）可用于可靠地评估表面置换杯的角度，当射线照片质量足够好时。当杯体处于角度的极限时，会呈现出特征性的外观。这些特征可以让外科医生在不使用软件的情况下识别位置不佳的杯体。
