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April 11, 2026Foot & Ankle Specialist0 citations

Polyethylene Wear in Total Ankle Arthroplasty Varies by Implant Type and Failure Mode

Total Ankle Arthroplasty Polyethylene Wear Varies With Implant Type and Mode of Failure

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Authors

JHJensen K. HenryETEmily TeehanKLKira Lu

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Overview

This retrospective study quantifies polyethylene damage in total ankle arthroplasty implants, revealing significant differences based on implant type and failure mode.

Key Points

  • The study aims to quantify polyethylene wear in total ankle arthroplasty (TAA) and its variations by implant type and mode of failure.
  • Retrospective study of TAA patients from 2007-2021
  • Comparison between symmetric bicondylar (SB) and asymmetric bicondylar (AB) implants
  • Microscopic examination of retrieved polyethylene inserts for wear patterns
  • Independent grading of wear severity by two raters
  • Statistical analysis of wear correlating with implant type and revision status.
  • Fifty-five TAAs were analyzed: 28 underwent revision and 27 reoperation.
  • SB implants showed significantly greater overall polyethylene damage severity compared to AB implants (P = .007).
  • Revision cases had higher overall damage severity than reoperations (P ≤ .036).
  • Significant increase in scratching and pitting observed in revision TAAs (P ≤ .030 and P < .001 respectively).
  • Damage severity varied across multiple articular regions, particularly in the medial anterior region (P = .019).
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Henry et al. (2026) studied this question.

synapsesocial.com/papers/69d9e5ec78050d08c1b76252https://doi.org/10.1177/19386400261431158
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