Gross Trunnion Failure in the Bipolar Hemiarthroplasty; Raising Concern about Short Trunnion: A Case Report
- Author:
Kangbaek KIM
1
;
Junpyo LEE
;
Jeong Joon YOO
;
Hee Joong KIM
Author Information
- Publication Type:CASE REPORT
- From:Hip & Pelvis 2021;33(1):40-44
- CountryRepublic of Korea
- Language:English
- 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.
