Serum Metal Ions with a Titanium Modular Neck Total Hip Replacement System.
rct · Level II
Where this comes from
- Record sourced from PubMed, PMID 26027522.
- Also identified by DOI 10.1016/j.arth.2015.04.040.
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Abstract
The goal of this study is to evaluate serum levels of chromium (Cr), cobalt (Co), and titanium (Ti) within the first two years following total hip arthroplasty using a Ti modular neck system. Twenty-five patients were randomized to a metal-on-metal (MoM) bearing with an all CoCr shell, and the remaining 25 received a metal-on-polyethylene (MoP) with a Ti shell. Serum levels demonstrated increases for Cr, Co, and Ti at 1 year (P < .001). MoM had similar Ti levels to MoP hips at 1 year (P=0.11) but lower at 2 years (P=0.03). Results suggest that the passive corrosion (i.e., chemical, pitting, and crevice corrosion) of exposed non-articular metal surfaces may be a greater source of ions than the neck-stem or head-neck interfaces.
Medical subject headings
- Arthroplasty, Replacement, Hip
- Hip Prosthesis
- Metals
- Titanium
Anatomy
- hip