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Updated: Nov 1, 2025

Novel Diagnostics in Revision Arthroplasty: Implant Sonication and Multiplex Polymerase Chain Reaction
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Prioritizing Research Informing Antibiotic Prophylaxis Guidelines for Knee Arthroplasty Patients.

K M Kuntz1, F Alarid-Escudero2, M F Swiontkowski3

  • 1Division of Health Policy & Management, School of Public Health, University of Minnesota, Minneapolis, MN, USA.

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|June 17, 2021
PubMed
Summary

Further research is valuable for antibiotic prophylaxis (AP) guidelines in dental patients with total knee arthroplasty (TKA). Current evidence lacks prospective trials, creating uncertainty in cost-effectiveness for AP strategies.

Keywords:
clinical practice guidelineseconomic evaluationevidence-based dentistry/health carejoint diseaseoutcomes researchquality of life

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Area of Science:

  • Orthopedic Surgery
  • Infectious Disease
  • Health Economics

Background:

  • Antibiotic prophylaxis (AP) guidelines for dental procedures in patients with total knee arthroplasty (TKA) lack robust evidence from prospective clinical trials.
  • This uncertainty impacts decision-making regarding the cost-effectiveness of different AP strategies to prevent periprosthetic joint infection (PJI).

Purpose of the Study:

  • To quantify the value of further clinical research using value-of-information (VOI) analysis.
  • To reduce decision uncertainty concerning the cost-effectiveness of AP strategies for dental patients undergoing TKA.

Main Methods:

  • An updated decision model and probabilistic sensitivity analysis (PSA) evaluated three AP strategies: no AP, 2-year AP, and lifetime AP.
  • VOI analyses estimated the value and cost of potential randomized controlled trials (RCTs) or observational studies.
  • Methods included meta-modeling for expected value of partial perfect information and Gaussian approximation for expected value of sample information (EVSI), calculating expected net benefit of sampling (ENBS).

Main Results:

  • A no-AP strategy showed the highest probability (60%) of being cost-effective at a $100,000/QALY threshold, with 2-year AP at 37%.
  • An optimal RCT would require ~421 patients/arm ($14.7M cost), and an observational study ~2,211 patients ($1.2M cost) to inform quality-of-life.
  • Both trial designs yielded an ENBS of approximately $25-26 million, indicating substantial research value.

Conclusions:

  • Significant uncertainty exists regarding clinical, health status, and economic parameters influencing AP guidelines for dental patients with TKA.
  • Conducting further clinical research is supported to reduce decision uncertainty and inform AP recommendations.
  • This research will aid clinicians and patients in the ongoing debate about AP for prosthetic joints.