Home E-Weekly November 15, 2016

Joint Replacement Numbers to Know

Published: November 11, 2016

Here are a few highlights of the U.S. hip and knee arthroplasty market, based on the American Joint Replacement Registry (AJRR) Annual Report. With 161,040 procedures submitted in 2015, AJRR represents approximately 15% of the total procedures performed annually in the United States. Included in the report are data on 427,181 procedures (primary and revision) from 416 hospitals and 3,170 surgeons performed between 2012 and 2015.

  • Demographics. Average patient age was 66.5 years; 40.8% were male and 59.2% were female. Females make up 61.1% of the total knee population and 56.5% of the total hip population.
  • Procedural breakdown. Total knee procedures continue to predominate, with all primary and revision total knee arthroplasties representing 60.4% of the volume compared to 39.6% for total hip arthroplasties.
  • Revision burden. This is the number of revision arthroplasties performed during a year compared to the total number of arthroplasties performed that same year. In 2015, there were 17,180 hip revisions out of a total of 169,060 hip arthroplasty procedures of all types, a revision burden of 10.2% for hips. For knee arthroplasties, there were 22,403 revision procedures out of the total of 258,121 knee arthroplasties recorded, for a knee revision burden of 8.7%.
  • Ceramic femoral head. The report shows a significant increase in the use of ceramic femoral heads, specifically in younger patients.
  • Unicompartmental knee implants. There was a slight downward trend in the use of unicompartmental knee implants between 2012 and 2015, which now represent approximately 5% of primary knee arthroplasty procedures. While unicompartmental arthroplasty is performed in the majority of hospitals, only about 30% of surgeons reported performing these procedures in 2015.

Download a PDF of the full report here.

Dan O'Connor

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