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Are all cementless acetabular components created equal?

John J Callaghan1, Carlton G Savory, Michael R O'rourke

  • 1University of Iowa Health Care, Department of Orthopaedics, Iowa City, Iowa 52242, USA.

The Journal of Arthroplasty
|June 11, 2004
PubMed
Summary
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The Harris-Galante I (HG) acetabular component showed better 15-year performance than the PCA component, with no radiographic loosening and fewer revisions for wear. PCA components experienced higher rates of aseptic loosening and radiographic loosening.

Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Medical device engineering

Background:

  • Cementless acetabular components are widely used in hip arthroplasty.
  • First-generation designs have shown varied long-term outcomes.
  • Understanding component performance is crucial for improving patient outcomes.

Purpose of the Study:

  • To compare the 15-year revision and radiographic loosening rates of two first-generation cementless acetabular components: Harris-Galante I (HG) and PCA.
  • To evaluate the long-term survivorship and failure modes of these early acetabular designs.

Main Methods:

  • A retrospective review of 15-year follow-up data for 120 HG I and 100 PCA cementless acetabular components.
  • Assessment of revision surgeries and radiographic evidence of loosening and osteolysis.

Related Experiment Videos

  • Comparison of failure rates between the two component designs.

    • Main Results:

    • Three HG I components were revised for wear and osteolysis without loosening.
    • Seventeen PCA components were revised for aseptic loosening (with or without osteolysis).
    • Twenty-one PCA components showed radiographic loosening, while no HG I components were radiographically loose at 15 years.

    Conclusions:

    • The Harris-Galante I (HG) acetabular component demonstrated superior performance compared to the PCA component at 15-year follow-up, with significantly lower rates of radiographic loosening.
    • Early cementless acetabular component designs exhibit distinct long-term survivorship profiles, highlighting the importance of design evolution in hip arthroplasty.
    • These findings underscore the impact of acetabular component design on revision rates and radiographic stability in total hip replacement.