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Novel Diagnostics in Revision Arthroplasty: Implant Sonication and Multiplex Polymerase Chain Reaction
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Application of Nucleic Acid-Based Strategies to Detect Infectious Pathogens in Orthopaedic Implant-Related Infection.

Emily Ann McClure1, Paul Werth2, Benjamin Ross1

  • 1Dartmouth College, Hanover, New Hampshire.

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|February 8, 2023
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Orthopaedic implant infections are hard to diagnose with traditional methods. Nucleic acid-based diagnostics offer a promising alternative for accurate microbial identification, improving patient outcomes.

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Area of Science:

  • Orthopaedic Surgery
  • Infectious Diseases
  • Molecular Diagnostics

Background:

  • Implant-associated infections in orthopaedic surgery present significant clinical challenges, often leading to persistent or recurrent infections.
  • Traditional microbial culture methods may underdiagnose or incompletely identify causative microbial species, contributing to treatment failures.

Purpose of the Study:

  • To review the rapidly developing field of nucleic acid-based diagnostic techniques for microbial identification in orthopaedic infections.
  • To elucidate the strengths and weaknesses of commonly applied molecular methods.
  • To outline best practices for interpreting results from these advanced diagnostic tools.

Main Methods:

  • Review of nucleic acid-based diagnostic techniques including end-point polymerase chain reaction (PCR), quantitative PCR, Sanger sequencing, and next-generation sequencing.
  • Discussion of critical factors for accurate interpretation of molecular diagnostic data.

Main Results:

  • Nucleic acid-based techniques provide a powerful alternative to traditional culture for identifying microbial species.
  • Understanding the specific characteristics of each molecular method is crucial for appropriate application and interpretation.
  • Adherence to best practices in result interpretation enhances diagnostic accuracy.

Conclusions:

  • Nucleic acid-based diagnostics are increasingly valuable for diagnosing orthopaedic implant-associated infections.
  • Proper selection and interpretation of molecular techniques are essential for clinical and research success.
  • Further research and standardized protocols will optimize the utility of these advanced diagnostic methods.