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Patellar complications after total knee arthroplasty

D Hernández-Vaquero1, U J Alvarez-González, C Fernández-Corona

  • 1Department of Orthopaedic Surgery, Hospital San Augustín, Avilés, Spain.

International Orthopaedics
|January 1, 1996
PubMed
Summary

This study found that men experienced more late patellar complications after total knee arthroplasty than women. These complications, including fractures and dislocations, were more frequent in men due to potentially higher functional demands.

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Clinical Outcomes Research

Background:

  • Total knee arthroplasty (TKA) is a common procedure for end-stage knee osteoarthritis.
  • Patellar complications can significantly impact patient outcomes following TKA.
  • Understanding risk factors for patellar complications is crucial for improving TKA success rates.

Purpose of the Study:

  • To retrospectively review late patellar complications after total knee arthroplasty.
  • To identify patient-specific and surgical factors associated with these complications.
  • To compare complication rates between genders.

Main Methods:

  • Retrospective review of 100 total knee arthroplasties performed between 1989 and 1993.
  • Analysis of patient demographics (age, gender), implant details, surgical factors (lateral patellar release, implant thickness), and range of motion.

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  • Statistical comparison of complication rates between men and women.

    • Main Results:

    • Six late patellar complications were identified (fractures, subluxations, dislocation, loosening).
    • Men (8.7%) experienced significantly higher complication rates than women (5.2%) (p < 0.05).
    • No other studied factors (age, implant type, lateral release, thickness, range of motion) were statistically relevant.

    Conclusions:

    • Gender is a significant factor in late patellar complications following total knee arthroplasty.
    • Men may be at higher risk due to greater functional demands placed on the arthroplasty.
    • Further research into gender-specific functional demands and TKA design may be warranted.