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Related Experiment Videos

Total knee arthroplasty: a population-based study.

J P Quam1, C J Michet, M G Wilson

  • 1Department of Diagnostic Radiology, Mayo Clinic, Rochester, MN 55905.

Mayo Clinic Proceedings
|June 1, 1991
PubMed
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Total knee arthroplasty (TKA) utilization has significantly increased, particularly for osteoarthritis and rheumatoid arthritis. This trend suggests a substantial and growing need for knee replacement surgery nationwide.

Area of Science:

  • Orthopedic Surgery
  • Epidemiology
  • Health Services Research

Background:

  • Total knee arthroplasty (TKA) is a common surgical procedure for knee arthritis.
  • Increasing utilization of TKA necessitates understanding its epidemiological trends.

Purpose of the Study:

  • To analyze the frequency and trends of TKA utilization in Olmsted County, Minnesota, between 1971 and 1986.
  • To identify the primary indications for TKA during this period.

Main Methods:

  • Retrospective review of TKA procedures performed in Olmsted County from 1971 to 1986.
  • Calculation of TKA utilization rates per 100,000 person-years.
  • Extrapolation of Olmsted County rates to the broader US population.

Main Results:

Related Experiment Videos

  • TKA utilization increased from 20.5 to 60.8 per 100,000 person-years between 1971-1974 and 1983-1986.
  • Osteoarthritis and rheumatoid arthritis accounted for over 90% of TKAs.
  • Utilization rates were higher in women and increased with age, with no urban-rural difference.

Conclusions:

  • TKA utilization saw a threefold increase from 1971 to 1986 in Olmsted County.
  • Projected national need for TKA in 1986 was at least 143,000 annually, with significant associated costs.
  • Age and sex are key demographic factors influencing TKA rates, with degenerative and inflammatory arthritis as primary drivers.