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Finegoldia magna: a forgotten pathogen in prosthetic joint infection rediscovered by molecular biology

Pierre-Yves Levy1, Florence Fenollar, Andreas Stein

  • 1Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes-Unité Mixte de Recherche, Centre National de la Recherche Scientifique 6236-Institut de Recherche et Developpement 198, Faculté de Médecine, Université de la Méditerranée, Marseille, France.

Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America
|September 18, 2009
PubMed

Insights

Finegoldia magna causes prosthetic infections in 2% of cases, often with polymicrobial or nosocomial infections. Current antibiotic prophylaxis shows limited effectiveness against this bacterium, highlighting diagnostic and treatment challenges.

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Orthopedic Surgery

Background:

  • Prosthetic joint infections are a significant clinical challenge.
  • Finegoldia magna is an emerging pathogen in orthopedic infections.
  • Understanding F. magna's role is crucial for effective management.

Purpose of the Study:

  • To report on a series of patients with prosthetic infections caused by Finegoldia magna.
  • To highlight the diagnostic and therapeutic challenges associated with F. magna infections.
  • To assess the prevalence of F. magna in prosthetic infections.

Main Methods:

  • Retrospective case series analysis of 13 patients.
  • Identification of F. magna using molecular diagnostic techniques.
  • Review of patient presentation and treatment outcomes.

Main Results:

  • Finegoldia magna was identified in 13 patients (2% of the series).
  • Infections were associated with open fractures or nosocomial prosthesis implantation.
  • Standard antibiotic prophylaxis demonstrated poor activity against F. magna.

Conclusions:

  • Finegoldia magna is a relevant cause of prosthetic infections.
  • Molecular diagnostics are essential for accurate F. magna identification.
  • Current prophylactic antibiotics are inadequate against F. magna, necessitating revised treatment strategies.

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