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Related Experiment Videos

Total ankle arthroplasty.

Mark E Easley1, Christopher J Vertullo, W Christopher Urban

  • 1Division of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710, USA.

The Journal of the American Academy of Orthopaedic Surgeons
|June 4, 2002
PubMed
Summary
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Second-generation total ankle replacements show improved outcomes compared to earlier designs. While promising, these results for total ankle arthroplasty require careful interpretation due to potential complications.

Area of Science:

  • Orthopedic surgery
  • Biomedical engineering
  • Materials science

Background:

  • First-generation total ankle arthroplasty (TAA) designs exhibited high complication and failure rates.
  • Ankle arthrodesis remains a benchmark for comparison in TAA outcomes.
  • Advancements in surgical techniques and prosthesis design have led to improved TAA results.

Purpose of the Study:

  • To evaluate the intermediate outcomes of second-generation total ankle replacement prostheses.
  • To compare the theoretical advantages of mobile-bearing versus fixed-bearing TAA designs.
  • To assess the functional results of specific second-generation TAA systems.

Main Methods:

  • Review of intermediate results for four second-generation TAA designs: Scandinavian Total Ankle Replacement, Agility Ankle, Buechel-Pappas Total Ankle Replacement, and TNK ankle.

Related Experiment Videos

  • Analysis of design principles, including mobile-bearing and fixed-bearing configurations.
  • Assessment of complication and failure rates in comparison to historical data and ankle arthrodesis.

    • Main Results:

    • Second-generation TAA designs demonstrate encouraging intermediate functional outcomes.
    • Mobile-bearing designs theoretically reduce wear and loosening via conformity and minimal constraint.
    • Fixed-bearing designs offer simplicity, avoiding dislocation and secondary articulation wear.
    • Specific designs like Scandinavian Total Ankle Replacement, Agility Ankle, Buechel-Pappas, and TNK ankle show reasonable outcomes.

    Conclusions:

    • Recent advancements in TAA design and surgical techniques have yielded promising intermediate results.
    • Second-generation total ankle prostheses represent an improvement over first-generation designs.
    • Continued monitoring and careful interpretation of intermediate outcomes are essential for TAA evaluation.