Hip Pelvis.
2021 Mar;33(1):40-44. 10.5371/hp.2021.33.1.40.
Gross Trunnion Failure in the Bipolar Hemiarthroplasty; Raising Concern about Short Trunnion: A Case Report
- Affiliations
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- 1Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul, Korea
- KMID: 2525889
- DOI: http://doi.org/10.5371/hp.2021.33.1.40
Abstract
- 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 lateonset, 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.
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