Plasticity-induced damage layer is a precursor to wear in radiation-cross-linked UHMWPE acetabular components for total hip replacement. Ultra-high-molecular-weight polyethylene.

  • Edidin A
  • Pruitt L
  • Jewett C
 et al. 
  • 33


    Mendeley users who have this article in their library.
  • N/A


    Citations of this article.


The mechanism for the improved wear resistance of cross-linked ultra-high-molecular-weight polyethylene (UHMWPE) remains unclear. This study investigated the effect of cross-linking achieved by gamma irradiation in nitrogen on the tribologic, mechanical, and morphologic properties of UHMWPE. The goal of this study was to relate UHMWPE properties to the wear mechanism in acetabular-bearing inserts. Wear simulation of acetabular liners was followed by detailed characterization of the mechanical behavior and crystalline morphology at the articulating surface. The wear rate was determined to be directly related to the ductility, toughness, and strain-hardening behavior of the UHMWPE. The concept of a plasticity-induced damage layer is introduced to explain the near-surface orientation of the crystalline lamellae observed in the wear-tested acetabular liners. Cross-linking reduces abrasive wear of acetabular components by substantially reducing--but not eliminating--the plasticity-induced damage layer that precedes abrasive wear.

Author-supplied keywords

  • Acetabulum
  • Arthroplasty, Replacement, Hip
  • Elasticity
  • Hip
  • Humans
  • Materials Testing
  • Polyethylenes
  • Prosthesis Failure
  • Replacement
  • Tensile Strength

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in


  • A A Edidin

  • L Pruitt

  • C W Jewett

  • D J Crane

  • D Roberts

  • S M Kurtz

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free