期刊
JOURNAL OF ARTHROPLASTY
卷 30, 期 10, 页码 1781-1786出版社
CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS
DOI: 10.1016/j.arth.2015.04.040
关键词
arthroplasty; hip; modular; titanium; ions
类别
资金
- Wright Medical Technologies (Memphis, Tennessee)
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. (c) 2015 Elsevier Inc. All rights reserved.
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