Service d'orthopédie et de chirurgie reconstructive, Centre de recherche de l'orthopédique clinique, Service A, Hôpital Cochin, 27, rue du Faubourg-Saint-Jacques, 75014 Paris, France.
Orthop Traumatol Surg Res. 2013 Nov;99(7):865-9. doi: 10.1016/j.otsr.2013.04.011. Epub 2013 Sep 23.
Oxinium femoral heads are supposed to be more scratch-resistant thanks to their oxidized layer. However, damages to this thin layer can jeopardize implant's properties. Following revision total hip arthroplasty performed for recurrent posterior dislocations, the Oxinium femoral head initially implanted was observed to be dramatically damaged. A metallic foreign body from a trochanteric fixation wire was found within the polyethylene cup. Only few cases of damaged Oxinium femoral heads have been reported and all were related to either dislocation or reduction of THA. The aim of this report is to describe a non-reported mechanism of damaged Oxinium femoral head due to a broken trochanteric fixation wire device. Any broken metallic wire from a transtrochanteric approach should be carefully followed to detect migration within the polyethylene cup. If such a migration occurs, revision surgery should be rapidly scheduled.
由于氧化层，Oxinium 股骨头应该更耐磨。然而，这个薄层的损伤会危及植入物的性能。在因反复后脱位而进行的翻修全髋关节置换术后，最初植入的 Oxinium 股骨头明显受损。在聚乙烯杯中发现了来自转子间固定钢丝的金属异物。只有少数几例报道的 Oxinium 股骨头受损病例，且均与髋关节脱位或 THA 复位有关。本报告的目的是描述一种由于转子间固定钢丝装置断裂而导致 Oxinium 股骨头受损的非报道机制。任何来自转子间入路的断裂金属丝都应仔细随访，以检测聚乙烯杯内的迁移。如果发生这种迁移，应迅速安排翻修手术。
