Pitié Salpétrière Hospital, Paris, France.
J Arthroplasty. 2010 Jun;25(4):658.e1-5. doi: 10.1016/j.arth.2009.05.013. Epub 2009 Jul 4.
An unusual case of undetected ceramic fracture was discovered by coincidence during total hip arthroplasty revision for sepsis. To our knowledge, this kind of fracture has never been described before. The cup liner was broken in 2 parts, consisting of a large outer annulus and a smaller round central piece that was detached from the superior and posterior part of the cup, creating a hole in the cup. The analysis of the retrievals suggests that the fracture occurred during walking at the contact point between the head and the cup. The ceramic breakage was asymptomatic with no mechanical disorder, suggesting that some ceramic fracture may be tolerated in vivo. However, any evidence of a fractured ceramic component should cause the surgeon to strongly consider revision.
在因脓毒症进行全髋关节翻修手术时，我们偶然发现了一个不常见的陶瓷假体未检测到的骨折案例。据我们所知，这种骨折以前从未被描述过。杯衬分为 2 部分，大块的外环和较小的圆形中央部分从杯的上部和后部分离，在杯中形成一个孔。对取出物的分析表明，骨折发生在头部和杯接触点行走时。陶瓷断裂没有症状，也没有机械故障，这表明体内可能可以耐受一些陶瓷断裂。但是，任何陶瓷部件断裂的证据都应使外科医生强烈考虑进行翻修。
