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ROSEMONT, Ill. (October 23, 2025)—The American Joint Replacement Registry (AJRR), the cornerstone of the American Academy of Orthopaedic Surgeons’ (AAOS) Registry Program, released its 12th Annual Report, reflecting continued growth in procedure count, advanced data methodologies, and strengthened national and international collaborations.

The 2025 report includes an analysis of more than 4.4 million hip and knee arthroplasty procedures collected from 2012 through 2024 from all 50 states, the District of Columbia, and Puerto Rico. This represents an 8.8% increase compared to the previous year. To date, the AJRR database encompasses more than 4.6 million cumulative procedures, reinforcing its position as the largest orthopaedic registry in the world by annual procedural count.

“Each year, the AJRR builds on its momentum as a premier national and global resource,” said James I. Huddleston, III, MD, FAAOS, chair of the AJRR Steering Committee. “By collecting and analyzing real-world patient data from millions of procedures, the Registry is driving evidence-based decisions that advance quality initiatives and expand the knowledge base that guides orthopaedic care worldwide.”

Advancing Data and Research to Improve Patient Outcomes

The 2025 report shows major advancements in data methodology, analytics, and research productivity, including:

“The AJRR’s continued growth reflects the commitment of our participating sites, surgeons, and data partners. By strengthening our analytic framework and expanding collaboration, we’re harnessing the power of data to turn information into insights that improve patient outcomes and help define best practices for the future of joint replacement care,” said Dr. Huddleston.

This year’s report also highlights AJRR’s expanding role in international registry collaboration. Working alongside the Michigan Arthroplasty Registry Collaborative Quality Initiative (MARCQI) and the International Society of Arthroplasty Registries (ISAR), AJRR is contributing to global data-sharing initiatives and the development of the International Prosthesis Library (IPL), a worldwide effort to standardize implant performance evaluation and accelerate clinical innovation.