Kim Kangbaek, Lee Junpyo, Yoo Jeong Joon, Kim Hee Joong
Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul, Korea.
Hip Pelvis. 2021 Mar;33(1):40-44. doi: 10.5371/hp.2021.33.1.40. Epub 2021 Mar 2.
There have been some reports of gross trunnion failure (GTF) in total hip arthroplasty. Here, we report a case of GTF 19 years after bipolar hemiarthroplasty using a 28-mm head with a 14/16 taper bore. Compared to other GTF reports, the current case had some unusual aspects: bipolar hemiarthroplasty, 28-mm head, relatively late-onset, and no apparent findings of metallosis though a severe one was evident. A Computed tomography scout view provided valuable information in evaluating polyethylene, metal head, and neck inside the bipolar cup. The current report suggests a need for concerned regarding short trunnion length which may be associated with GTF.
全髋关节置换术中已有一些关于股骨柄严重失效(GTF)的报道。在此,我们报告一例在使用28毫米股骨头和14/16锥孔的双极半髋关节置换术后19年发生GTF的病例。与其他GTF报告相比,本病例有一些不寻常之处:双极半髋关节置换术、28毫米股骨头、相对较晚发病,且尽管有严重的GTF,但无明显金属沉着病表现。计算机断层扫描定位像在评估双极髋臼杯内的聚乙烯、金属股骨头和股骨颈方面提供了有价值的信息。本报告提示需要关注可能与GTF相关的短股骨柄长度问题。