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Table 2 Transformation rate and surface roughness of retrieved and unused zirconia heads

From: In vivo wear performance of highly cross-linked polyethylene vs. yttria stabilized zirconia and alumina stabilized zirconia at a mean seven-year follow-up

Cause of Revision Zirconia Material Duration (years) Transformation rate (%) Surface roughness Ra (μm)
Infection PSZ 2.3 51 0.06
Dislocation ASZ 1.5 7 0.03
ASZ 3.2 7 <0.01
Unused PSZ   4 0.01
ASZ   3 <0.01
  1. PSZ partially-stabilized zirconia.
  2. ASZ alumina stabilized zirconia.