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Osteoarticular Infections in Immunocompetent Children Due to Atypical, Fastidious or Unusual Bacterial Pathogens: A

Ardian Ramadani1, Giacomo de Marco1, Oscar Vazquez1

  • 1Paediatric Orthopedics Unit, Geneva University Hospitals and University of Geneva, CH-1205 Geneva, Switzerland.

Pathogens (Basel, Switzerland)
|June 25, 2026
PubMed

Insights

Diagnosing osteoarticular infections (OAIs) in children requires recognizing uncommon bacterial pathogens beyond common culprits. Advanced molecular diagnostics aid in identifying these challenging cases for better treatment.

Area of Science:

  • Pediatric Infectious Diseases
  • Microbiology
  • Molecular Diagnostics

Background:

  • Osteoarticular infections (OAIs) pose significant diagnostic and therapeutic challenges in pediatric practice.
  • Commonly identified pathogens include Staphylococcus aureus, Streptococcus pyogenes, Streptococcus pneumoniae, and Kingella kingae.
  • Emerging molecular techniques enhance the detection of less common OAI pathogens.

Purpose of the Study:

  • To review fastidious, emerging, exposure-related, and uncommon bacterial pathogens causing OAIs in immunocompetent children.
  • To enhance understanding of these less-common pathogens for improved diagnosis and treatment.
  • To provide insights into diagnostic challenges and strategies for these pathogens.

Main Methods:

  • Literature review focusing on bacterial pathogens responsible for OAIs in immunocompetent children.
  • Analysis of microbiological characteristics, clinical presentations, and diagnostic pitfalls.
  • Synthesis of organism-specific diagnostic strategies.

Main Results:

  • Identified key uncommon pathogens contributing to pediatric OAIs.
  • Highlighted the importance of molecular diagnostics in detecting these pathogens.
  • Detailed the unique clinical and microbiological features of these less-common bacteria.

Conclusions:

  • Familiarity with fastidious, emerging, and uncommon pathogens is crucial for accurate pediatric OAI diagnosis.
  • Advanced diagnostic methods are vital for identifying a broader spectrum of causative agents.
  • Tailored diagnostic strategies are necessary for effective management of diverse OAI etiologies.

Keywords:
atypical pathogensfastidious organismsnucleic acid amplification testingosteoarticular infectionosteomyelitisseptic arthritis

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