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Updated: Sep 29, 2025

Novel Diagnostics in Revision Arthroplasty: Implant Sonication and Multiplex Polymerase Chain Reaction
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Extended Oral Antibiotic Prophylaxis After Aseptic Revision TKA: Does It Decrease Infection Risk?

Brandon R Bukowski1, Aaron R Owen1, Travis W Turner1

  • 1Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN.

The Journal of Arthroplasty
|March 21, 2022
PubMed
Summary
This summary is machine-generated.

Extended oral antibiotics (EOA) may reduce infection risk after aseptic revision total knee arthroplasty (TKA). EOA was linked to a 7-fold lower infection risk at 90 days, suggesting a potential benefit in TKA revision surgery.

Keywords:
aseptic revision total knee arthroplastyextended oral antibioticsinfectionperiprosthetic joint infectionrevision total knee arthroplasty

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Area of Science:

  • Orthopedic Surgery
  • Infectious Disease
  • Clinical Research

Background:

  • Extended oral antibiotic prophylaxis (EOA) is used in high-risk primary total knee arthroplasties (TKAs).
  • Limited data exists on EOA's efficacy in aseptic revision TKAs.
  • This study investigates EOA's impact on infection outcomes in aseptic revision TKA.

Purpose of the Study:

  • To evaluate the effect of extended oral antibiotic prophylaxis (EOA) on infection-related outcomes.
  • To compare infection rates in patients undergoing aseptic revision TKA with and without EOA.

Main Methods:

  • Retrospective analysis of 904 aseptic revision TKAs (2014-2019).
  • Comparison of patients receiving EOA (>24 hours) versus no EOA using inverse probability of treatment weighting.
  • Outcomes assessed: cumulative probabilities of any infection, periprosthetic joint infection (PJI), superficial infection, and infection-related re-revision/reoperation.

Main Results:

  • The cumulative probability of any infection at 5 years was 8.1%.
  • Patients without EOA had a significantly higher risk of any infection at 90 days (HR=7.1, P=.01).
  • No significant difference in PJI, superficial infection, or re-revision/reoperation for infection between groups.

Conclusions:

  • Extended oral antibiotics after aseptic revision TKA were associated with a 7-fold decreased risk of any infection at 90 days.
  • EOA may play a role in reducing early infection after aseptic revision TKA.
  • Further prospective studies are warranted to confirm these findings.