The Australian Orthopaedic Association National Joint Replacement Registry (AOANJRR) is an initiative of the Australian Orthopaedic Association (AOA). The AOANJRR was established in 1999 becoming fully national in mid 2002.

The American Joint Replacement Registry (AJRR) is the world's largest registry of hip and knee replacement data by annual procedural count. The Registry contains data on 3 million+ procedures from hospitals, ambulatory surgery centers (ASCs), and private practice groups in all 50 states and the District of Columbia.

The registry is now tracking the outcome of 1.8 million joint replacements. 2021 saw 52,787 hip replacements, 68,466 knee replacements, and 8,733 shoulder replacements.

The National Joint Registry records, monitors, analyses and reports on performance outcomes in joint replacement surgery in a continuous drive to improve service quality and enable research, to ultimately improve patient outcomes.