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Fracture of a Cross-Linked Polyethylene Liner:A Multifactorial Issue

Authors
Journal
The Journal of Arthroplasty
0883-5403
Publisher
Elsevier
Publication Date
Volume
26
Issue
4
Identifiers
DOI: 10.1016/j.arth.2010.07.009
Keywords
  • Highly Cross-Linked Polyethylene
  • Fatigue Fracture
  • Revision Total Hip Arthroplasty
  • Liner Exchange

Abstract

Abstract A limited number of reports have detailed the cause of fracture of a highly cross-linked polyethylene liner. Typically, the fractures have occurred in a region of thin and/or unsupported polyethylene, in association with superiorly directed edge loading conditions secondary to an excessively inclinated acetabular component. This case report details an unusual fracture mechanism of a 5-mrad cross-linked liner caused by horizontal loading conditions. The report details several factors that were felt to be etiologic including the specific liner locking mechanism. The treatment options are discussed.

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