Abstract
The purpose of this study was to compare whole blood metal ion levels in young, active patients undergoing primary total hip arthroplasty with the use of a cobalt-alloy (ten patients), ceramic (15 patients), or oxinium (11 patients) femoral head and highly crosslinked polyethylene acetabular liner. At 2 years postoperatively, mean cobalt concentrations were 3.0 times higher in the cobalt-alloy cohort versus the ceramic cohort, and 2.3 times higher versus the oxinium cohort (P=0.3-0.5). Titanium levels were consistently elevated at all postoperative time points versus preoperatively in all cohorts. Young, active patients following THA demonstrate elevated cobalt and titanium concentrations. Use of a ceramic or oxinium femoral head decreased the degree of cobalt elevation versus a cobalt-alloy femoral head, but did not reach statistical significance.
Original language | English |
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Pages (from-to) | 2227-2232 |
Number of pages | 6 |
Journal | Journal of Arthroplasty |
Volume | 30 |
Issue number | 12 |
DOIs | |
State | Published - Dec 1 2015 |
Keywords
- Ceramic
- Cobalt
- Metal ions
- Oxinium
- Total hip arthroplasty