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Related Experiment Videos

Patellar resurfacing in total knee arthroplasty.

R L Barrack1, M W Wolfe

  • 1Tulane University School of Medicine, New Orleans, USA.

The Journal of the American Academy of Orthopaedic Surgeons
|May 8, 2000
PubMed
Summary

The decision to resurface the patella during total knee arthroplasty (TKA) is complex. Clinical studies show minimal differences between resurfaced and non-resurfaced patellae in osteoarthritis, suggesting individualized treatment.

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Knee Biomechanics

Background:

  • Patellar resurfacing in primary total knee arthroplasty (TKA) is debated.
  • Anatomical variability and component malrotation (10-30%) can alter knee topography and kinematics.
  • Modern implant designs still induce changes in knee biomechanics post-TKA.

Purpose of the Study:

  • To review current evidence on patellar resurfacing in primary TKA.
  • To analyze factors influencing patellofemoral joint outcomes after TKA.
  • To guide individualized treatment decisions for patellar management during TKA.

Main Methods:

  • Review of recent anatomical, biomechanical, and clinical studies.
  • Analysis of intraoperative techniques and component positioning accuracy.

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  • Evaluation of clinical outcomes comparing resurfaced vs. non-resurfaced patellae.

    • Main Results:

    • Significant variability in trochlear groove anatomy exists.
    • Component malrotation occurs in 10-30% of TKAs.
    • Most clinical studies show negligible differences in outcomes between resurfaced and non-resurfaced patellae in osteoarthritic knees.

    Conclusions:

    • Patellar resurfacing in TKA is not universally indicated.
    • Outcomes are highly variable and influenced by surgical factors.
    • Individualized decision-making based on surgeon experience and intraoperative assessment is crucial.