Abstract
We analysed the relationship between serum metal ions, radiological periprosthetic osteolysis and the clinical features in a series of 25 patients treated with fourth-generation metal-on-polyethylene total wrist prostheses. The mean implant follow-up was 7 years. Our results show that titanium was the main elevated serum metal ion in patients with the prostheses that we used; elevated serum cobalt or chromium values were infrequent. The risk of loosening was higher in an implant older than 6 years, with more than five periprosthetic osteolysis points according to our radiograph zone system, and serum titanium values between 26 to 31 µg/L. The presence of metallosis pseudotumours does not guarantee but increases the risk of implant failure, which may be asymptomatic or associated with little pain.
Get full access to this article
View all access options for this article.
