No Difference in Conventional Polyethylene Wear Between Yttria-stabilized Zirconia and Cobalt-chromium-molybdenum Femoral Heads at 10 Years.

ABSTRACT:

Background

Concerns have arisen regarding deterioration of wear properties of yttria-stabilized zirconia (YSZ) femoral head on conventional polyethylene (PE) bearings due to YSZ phase transformation.

Questions/purposes

The purpose of this study was to determine if there is a difference in long-term PE wear properties between YSZ and cobalt-chromium-molybdenum (Co-Cr-Mo) femoral heads.

Methods

Ten-year radiographic wear assessment was performed on a cohort of patients enrolled in a prospective randomized clinical trial comparing total hip arthroplasty with YSZ or Co-Cr-Mo femoral heads on conventional, non-cross-linked PE.

Results

PE linear wear, annualized wear, and steady-state wear rates remained low and similar between groups. No cases of osteolysis were obs

SUBMITTER: Morrison TA 

PROVIDER: S-EPMC5786591 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature