Spotlight - International Registries

Australian Orthopaedic Association National Joint Replacement Registry

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 purpose of the AOANJRR is to improve and maintain the quality of care for individuals receiving joint replacement surgery. Information on hip, knee, shoulder, elbow, wrist, ankle and spinal disc replacement is collected from all hospitals in Australia undertaking joint replacement surgery.

Hip Replacement

  • There were 49,764 hip replacements reported to the Registry in 2018. This is an increase of 1.7 % compared to the number undertaken in 2017.
  • Primary partial hips account for 14.9% of all hip replacements reported to the Registry since it commenced data collection. Primary total hips account for 74.2% and revision hips 11.0%.
  • The number of hip replacements reported to the Registry has increased each year. The number of hip replacements undertaken in 2018 was 83.4% more than undertaken in 2003, when the registry started collecting data.
  • The number of primary total hips, which are most often done due to severe arthritis, has increased by 108.1% during the same time. The increase in revision hip replacement was the lowest of all categories and comparing 2003 to 2018 the number of revision hip procedures increased by 19.5%.
  • The revision burden was 12.6%, in 2012 it was 11.9%, in 2013 it was 10.7%, and in 2018 it had decreased to 8.4%. This is the lowest revision burden for hip replacement ever reported by the Registry.

Knee Replacement

  • There were 65,266 knee replacements undertaken and reported to the Registry in 2018. This is an increase of 5.0% compared to the number reported in 2017.
  • Primary partial knee replacement accounts for 7.8% of all knee replacements reported to the Registry since it commenced data collection. Primary total knees account for 84.2% and revision knees 8.0%.
  • In 2018, there was a 128.1% increase in the number of knee replacements compared to 2003. However, the rate of change differs depending on the category of knee replacement. Primary total knee replacement has increased by 156.2% since 2003 and revision knees by 108.2%. However, primary partial knees have decreased by 4.0%. Almost all primary knee replacements, whether they are partial or total, are undertaken for osteoarthritis.
  • The percentage of knee replacements that are revisions decreased from 8.8% in 2004 to 7.5% in 2018.

For more information, check the latest annual report here.


Canadian Joint Replacement Registry

The Canadian Joint Replacement Registry (CJRR), managed by CIHI, is Canada’s only national medical device registry. Launched in 2001, it’s a collaborative effort with the Canadian Orthopaedic Association. We collect patient-specific information (clinical, surgical and prosthesis) on hip and knee replacement surgeries performed in Canada. The CJRR is guided by its Advisory Committee, which is made up of orthopaedic surgeons; representatives from provincial ministries of health, the Canadian Orthopaedic Association, the Canadian Orthopaedic Nurses Association and the Arthritis Society of Canada; and a patient representative. The CJRR Advisory Committee is chaired by Dr. Eric Bohm and co-chaired by Dr. Michael Dunbar.

  • Almost 59,000 hip replacements and more than 70,000 knee replacements were performed in Canada in 2017–2018. This represents an increase of 17.4% and 17%, respectively, over the last 5 years.
  • More than 9,700 hip and knee revision surgeries were performed last year, representing 8.2% and 6.9%, respectively, of all joint replacement surgeries in Canada.
  • The average inpatient cost of a revision surgery was about $17,000 — almost 80% higher than the cost of a primary joint replacement.
  • Patients spent an average of 9 days in the hospital after a revision surgery. This is more than double the length of a hospital stay for a primary joint replacement.

For more information, check the latest annual report here.


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