Failure of a polyaryletheretherketone-cobalt-chromium composite femoral stem due to coating separation and subsidence: A case report

Meredith K. Bartelstein, Douglas W. Van Citters, Mitchell C. Weiser, Calin S. Moucha

Research output: Contribution to journalArticle

Abstract

Case: A 52-year-old man who previously had undergone total hip arthroplasty with use of an Epoch (Zimmer) extensively porous-coated femoral stem presented with hip pain after a high-energy motor-vehicle accident. Radiographs demonstrated delamination at the polyaryletheretherketone-cobalt-chromium (PEEK-CoCr) core interface, which led to loosening. At revision, the implant demonstrated gross evidence of debonding at the PEEK-CoCr interface. Conclusion: We demonstrate clinical and tribologic evidence of a rare failure mode involving the PEEK-metal interface in a composite femoral stem, which surgeons should be aware of when evaluating patients with this type of implant.

Original languageEnglish (US)
Article numbere83
JournalJBJS Case Connector
Volume7
Issue number4
DOIs
StatePublished - Jan 1 2017
Externally publishedYes

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

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