California Joint Replacement Registry (CJRR)

The California Joint Replacement Registry (CJRR), collected and shared data to provide credible feedback to orthopedic surgeons, hospitals and patients about their treatment decisions, quality of care and patient outcomes. Operated by PBGH for several years, CJRR was created to meet the need for comprehensive, scientific assessment of devices, treatment protocols, surgical approaches and patient factors influencing the results of hip and knee replacement surgeries for the State of California. In March 2015, the CJRR was transitioned to the American Joint Replacement Registry (AJRR).

The CJRR is one of only two registries in the U.S. that collects and incorporates clinical information along with patient-reported outcome measures (PROMs), such as patients’ overall health, pain and energy before and after their joint replacement procedures. CJRR has published hospital performance information online and in annual reports in an effort to drive care improvement and support emerging payment and health care delivery models. With the help of CJRR, providers will be assessed based on their patient outcomes, while their payments and inclusion in provider networks will be based on performance. The long-term goals are to improve treatment decisions and care delivery for patients receiving joint replacements.

CJRR has 41 participating institutions and 225 participating surgeons in its registry. Though the project has transitioned to another entity, PBGH staff continue to contribute to the project’s advisory committee, the California Data Use Group. For more information, please visit