The American Joint Replacement Registry (AJRR) has partnered with Arthroplasty Today to provide the readership with in-depth information regarding registry data in the United States. Given the changing health care environment, registry data provided at the national level will greatly impact health care and lead to improvements in our clinical practice. Each year,Arthroplasty Today will publish important research and information from AJRR in the June issue.

In this issue, Brian M. McGrory, MD, Caryn D. Etkin, PhD, MPH and David G. Lewallen, MD look at the definitions of revision and revision burden across international registries. Read the June Issue.