California State Registry


The California Joint Replacement Registry (CJRR), merged with the AJRR at the end of March 2015, 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.

The CJRR data is now contained within the AJRR. However, certain reporting functions remain intact so those institutions in California can still utlize the Registry as they did when they were part of the CJRR.

Here are the institutions that were part of the CJRR. For a complete list of all AJRR participaints, visit here.


Public Reporting

CJRR was the first orthopaedic registry in the U.S. to publicly publish patient-reported outcome measures (PROMs) data collected from participating hospitals. CJRR collected PROMs from patients via survey by asking them to answer questions regarding their overall health, pain, fatigue, and mood, before and after the procedure to determine whether their quality of life has improved. This data is essential for facilitating shared decision-making, drive care improvement, and support new payment and delivery models anchored in patient-centered care.

California Hospital Ratings

The results below are based on data collected in the state of California’s Registry about surgeries that occurred from April 1, 2011 to June 17, 2016 and April 1, 2011 to November 6, 2014, respectively. Some hospitals may have had a larger number of surgeries during this time period. Only those patients that completed both a pre-surgical survey and a follow-up survey one year after surgery are included here. Different hospitals started collecting CJRR data at different times during this period. Hospitals with a small number of responses may have joined the CJRR later in the reporting period.

2016 Patient-Reported Outcomes Results

2014 Patient-Reported Outcomes Results

(New hospital ratings will be published annually in November)


Click here for a complete list of FAQs regarding the public reporting for CJRR.

Archived CJRR Patient-Reported Outcomes Brief Selection Tool Documentation (2010)

CJRR Publications

CJRR Cover 16

CJRR Annual Reports

In November 2016, CJRR released its second Annual Report detailing the findings from data collected between April 1, 2011 and June 17, 2016. The report features patient-reported outcome completion rates for the first time, in addition to addressing the length of stay, comorbidities and adverse events, and other patient factors influencing the results of hip and knee replacement surgeries for the state of California. Click here to view the 2016 Annual Report.

In November 2015, CJRR released its first Annual Report detailing the findings from data collected between April 1, 2011 to May 20, 2015. The report includes information about 8,130 knee replacements and 6,023 hip replacements from 26 hospitals and 163 surgeons. Click here to view the 2014 Annual Report.

In June 2014, CJRR released its first progress update detailing the findings from the first two years of data collection, April 2011 to April 2013. This report includes information about 5,100 hip and knee replacement procedures from nine hospitals and 61 surgeons. Click here to view this 2013 progress update.

The Golden Register Newsletter

The Golden Register is a quarterly e-newsletter dedicated to providing information to CJRR users and participants. Listed below are past versions of The Golden Register. If you would like to begin recieving The Golden Register, please email Erik Michalesko at This email address is being protected from spambots. You need JavaScript enabled to view it..

 Annual Meeting Posters

The CJRR had four posters featured at the 2016 International Society of Arthroplasty Registries (ISAR) Annual Meeting. Visit the links below to view each poster.


Log into AJRR Website

Login here to access the User Group Forum, CJRR Files, or the Board of Directors portal.

The Register

May 2017

May Register

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The Register

May 2017

May Register

Read Online