Hywel Dda NHS Trust, West Wales General Hospital, Carmarthen, UK.
J Arthroplasty. 2012 Mar;27(3):493.e1-3. doi: 10.1016/j.arth.2010.11.019. Epub 2011 Jul 12.
We report a case of extensive metallosis owing to an intraprosthetic dislocation of a dual-mobility cup after a primary total hip arthroplasty. A 70-year-old man was referred to us from another center with a painful right hip 3 years after the arthroplasty. Initial investigations were suspicious of osteolysis secondary to metallosis with the characteristic "bubble sign" visualized on plain radiographs. At the revision procedure, widespread black staining of soft tissues and bone was noted. The polyethylene liner had dislodged leading to erosion of the metal socket by the prosthetic head. Histopathology examination of periprosthetic tissue confirmed metallosis. To our knowledge, this is the first reported case of severe metallosis owing to a known complication of dual-mobility sockets.
我们报告了一例因初次全髋关节置换术后双动杯假体脱位导致的广泛金属病。一名 70 岁男性在初次全髋关节置换术后 3 年因右髋疼痛被转诊至我们医院。初步检查提示金属病继发骨溶解，平片上可见典型的“气泡征”。在翻修手术中，广泛的软组织和骨的黑色染色被注意到。聚乙烯衬垫已移位，导致金属套筒被假体头侵蚀。假体周围组织的组织病理学检查证实了金属病。据我们所知，这是首例已知的双动杯并发症导致的严重金属病病例。
