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Changing trends in total knee replacement.

Ewan B Goudie1, Cal Robinson2, Phil Walmsley2

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|March 11, 2017
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Summary
This summary is machine-generated.

Demographics for total knee replacement (TKR) patients have shifted, with older, heavier individuals experiencing worse pain and function pre-surgery over two decades. This highlights evolving patient profiles undergoing TKR.

Keywords:
BMIDemographicsOsteoarthritisTotal knee replacement

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Area of Science:

  • Orthopedic Surgery
  • Medical Demographics
  • Patient Outcomes

Background:

  • Total knee replacement (TKR) is a common procedure with evolving patient populations.
  • Understanding demographic shifts is crucial for surgical practice and resource allocation.
  • Previous studies have indicated changes in TKR patient characteristics over time.

Purpose of the Study:

  • To evaluate changes in patient demographics and surgical practice for total knee replacement (TKR) over two decades.
  • To compare patient characteristics and outcomes between two distinct time periods.
  • To identify trends in age, body mass index (BMI), and pain/function scores among TKR candidates.

Main Methods:

  • Retrospective analysis of prospectively collected data from TKR patients.
  • Comparison of two patient groups: 1994-1998 (Group One) and 2009-2012 (Group Two).
  • Statistical analysis of demographic data (age, BMI) and functional scores (AKSS pain and function components).

Main Results:

  • Group Two patients were significantly older (70.1 vs. 68.9 years) and had higher BMIs (32.0 vs. 29.5 kg/m²) compared to Group One.
  • The mean pain component of the AKSS was significantly worse in Group One (28.6) than in Group Two (35.5).
  • The mean function component of the AKSS was significantly worse in Group One (48.6) than in Group Two (51.5).

Conclusions:

  • Patient demographics undergoing TKR have significantly changed over the past two decades.
  • TKR patients in the later period were older and heavier, yet reported better pre-operative pain and function.
  • These findings underscore the evolving profile of individuals seeking TKR and may influence surgical planning and expectations.