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Patellofemoral arthroplasty: an update.

Jean-Noël A Argenson1, Xavier Flecher, Sebastien Parratte

  • 1Aix-Marseille University, Hôpital Sainte-Marguerite, Marseille, France. jean-noel.argenson@ap-hm.fr

Clinical Orthopaedics and Related Research
|October 22, 2005
PubMed
Summary

Long-term patellofemoral arthroplasty results show 58% survivorship at 16 years. Patient selection is crucial, with instability and corrected alignment yielding the best outcomes for this knee surgery.

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Area of Science:

  • Orthopedic surgery
  • Biomedical engineering
  • Clinical outcomes research

Background:

  • Patellofemoral arthroplasty (PFA) is a surgical procedure to address knee joint issues.
  • Long-term outcomes and the influence of preoperative diagnosis on PFA results require further investigation.

Purpose of the Study:

  • To report long-term clinical and survival outcomes of patellofemoral arthroplasty.
  • To determine if preoperative diagnosis impacts PFA outcomes and indications.

Main Methods:

  • Retrospective update of a previous evaluation of 66 patients who underwent unilateral PFA between 1972 and 1990.
  • Average follow-up of 16.2 years.
  • Analysis of preoperative diagnoses including instability, fracture, and primary arthritis.

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Main Results:

  • Survivorship of PFA was 58% at 16 years.
  • Knee function scores improved significantly, from 40 preoperatively to 81 at last follow-up.
  • Best outcomes were observed in patients with preoperative instability and corrected extensor mechanism alignment.

Conclusions:

  • Patellofemoral arthroplasty demonstrates the importance of careful patient selection.
  • Excluding knees with significant frontal tibiofemoral malalignment is recommended for optimal PFA results.
  • Preoperative diagnosis significantly influences PFA outcomes, guiding future indications.