Introducing new joint replacements to clinical practice.

The author reflects on the introduction of new artificial hip implants to clinical pratice. He mentions a newly published systematic review by Sedrakyan and colleagues that compares traditional metal on polyethylene bearings with newer ceramic on ceramic and metal on metal bearings showing that the perceived benefits are not reflected in outcomes in arthroplasty registries. He adds that guidance on metal on metal joint replacement was first introduced in Great Britain.