Does Metal Transfer Differ on Retrieved Ceramic and CoCr Femoral Heads? Academic Article uri icon

Overview

abstract

  • Metal transfer has been observed on retrieved THA femoral heads for both CoCr and ceramic bearing materials. In vitro wear testing has shown increased wear to polyethylene acetabular liners with the presence of metal transfer. This study sought to investigate the extent of metal transfer on the bearing surface of CoCr and ceramic femoral heads and identify prevalent morphologies. Three bearing couple cohorts: M-PE (n = 50), C-PE (n = 35), and C-C (n = 15), were derived from two previously matched collections (n = 50/group) of CoCr and ceramic femoral heads. From the three cohorts, 75% of the femoral heads showed visual evidence of metal transfer. These femoral heads were analyzed using direct measurement, digital photogrammetry, and white light interferometry. Surface area coverage and curved median surface area were similar among the three cohorts. The most prevalent metal transfer patterns observed were random stripes (n = 21/75), longitudinal stripes (n = 17/75), and random patches (n = 13/75). Metal transfer arc length was shorter in the M-PE cohort. Understanding the morphology of metal transfer may be useful for more realistic recreation of metal transfer in in vitro pin-on-disk and joint simulators studies.

publication date

  • October 25, 2015

Research

keywords

  • Arthroplasty, Replacement, Hip
  • Ceramics
  • Chromium Alloys
  • Hip Prosthesis

Identity

PubMed Central ID

  • PMC4637014

Scopus Document Identifier

  • 84947447679

Digital Object Identifier (DOI)

  • 10.1155/2015/283038

PubMed ID

  • 26583097

Additional Document Info

volume

  • 2015