Polster V, Hube R, Morlock MM. Gross Stem Taper Failure with Head Dissociation in a Very Active Patient with an Uncemented Femoral Stem.
JBJS Case Connect 2020;
10:e1900662. [PMID:
32773715 DOI:
10.2106/jbjs.cc.19.00662]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
CASE
We report a case of gross taper failure (GTF) in a very active 81-year-old man 14 years after index operation. The patient presented with acute hip pain and shortening of the left leg. X-rays showed the dissociation of the head. The stem had to be revised because of the massive stem taper damage.
CONCLUSION
This case demonstrates that GTF at the head-stem taper junction following mechanically assisted crevice corrosion is not limited to a specific taper design and material. Other risk factors such as high activity level can lead to this failure pattern also in established stem and taper designs.
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