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Related Experiment Videos

Should the patella be replaced in total knee replacement?

N Badhe1, G Dewnany, P J Livesley

  • 1Queens Medical Centre, Nottingham, UK. nitinbadhe@hotmail.com

International Orthopaedics
|June 21, 2001
PubMed
Summary

Total knee arthroplasty outcomes were compared between patients who did and did not receive patellar replacement. Patellar resurfacing in total knee arthroplasty showed improved functional scores and reduced symptomatic non-congruency.

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Arthroplasty Research

Background:

  • Osteoarthritis commonly necessitates total knee arthroplasty (TKA).
  • The patellar component in TKA remains a subject of debate regarding optimal surgical technique and patient outcomes.
  • Assessing the impact of patellar resurfacing versus non-resurfacing is crucial for improving TKA procedures.

Purpose of the Study:

  • To compare clinical and radiological outcomes of TKAs performed with and without patellar replacement.
  • To evaluate the incidence of symptomatic patellar non-congruency and revision rates between the two surgical approaches.

Main Methods:

  • A retrospective study of 170 total knee arthroplasties for osteoarthritis.
  • Group A: 71 knees without patellar replacement; Group B: 99 knees with cemented polyethylene patellar replacement.

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  • Follow-up averaged 36 months, assessing radiological patellar congruency, HSS scores, and patellar scores.

    • Main Results:

    • Radiological patellar congruency was similar between groups (21 non-congruent knees in each).
    • Group A had significantly more symptomatic non-congruent knees (8) compared to Group B (2) (P<0.05).
    • Mean Hospital for Special Surgery (HSS) and patellar scores were significantly higher in Group B (patellar replacement) than in Group A (P<0.05).

    Conclusions:

    • Cemented polyethylene patellar replacement in TKA is associated with better functional outcomes and lower rates of symptomatic patellar non-congruency compared to non-replacement.
    • Patellar resurfacing should be considered in TKA for osteoarthritis to improve patient satisfaction and functional recovery.