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Is kinematic total knee replacement better than total hip replacement?

F C Ewald1, H P Hsu, P S Walker

  • 1Harvard Medical School, Boston, Massachusetts.

The Orthopedic Clinics of North America
|January 1, 1989
PubMed
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Total knee replacement (TKR) shows comparable or better outcomes than total hip replacement (THR) in medium-term follow-ups. Bone-cement analysis suggests TKR may offer superior long-term survival compared to THR.

Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Clinical outcomes research

Background:

  • Total knee replacement (TKR) is a common procedure for knee arthritis.
  • Assessing the long-term appropriateness of TKR for older, low-demand patients is crucial.
  • Comparison with total hip replacement (THR) outcomes provides valuable context.

Purpose of the Study:

  • To evaluate revision and complication rates of TKR in older, low-demand patients.
  • To compare the bone-cement interface reaction in TKR with THR.
  • To determine the long-term suitability of conventional TKR for this patient demographic.

Main Methods:

  • Review of 1,069 condylar total knee replacements.
  • Analysis of revision rates, complication rates, and bone-cement interface.

Related Experiment Videos

  • Comparative analysis with published data from two total hip replacement series.

    • Main Results:

    • Medium-term follow-up indicates TKR is as good as or superior to THR.
    • Bone-cement interface analysis suggests favorable long-term survival for TKR.
    • No significant difference in complication rates between TKR and THR was implied.

    Conclusions:

    • Conventional TKR is appropriate for older, low-demand patients.
    • TKR demonstrates comparable or superior medium-term outcomes to THR.
    • Projected ten-year survival of TKR surpasses that of conventional THR based on bone-cement interface data.