Infected total knee arthroplasty due to Actinomyces naeslundii

J Ruhe1, K Holding, D Mushatt

  • 1Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana 70112, USA.

Insights

This case study details a rare total knee arthroplasty infection caused by Actinomyces naeslundii. It highlights the complex challenges in making treatment decisions for such infections.

Area of Science:

  • Orthopedic Surgery
  • Infectious Diseases
  • Microbiology

Background:

  • Total knee arthroplasty (TKA) is a common orthopedic procedure.
  • Prosthetic joint infections (PJIs) are serious complications following TKA.
  • Actinomyces species are uncommon causes of PJIs.

Observation:

  • A patient developed a TKA infection due to Actinomyces naeslundii.
  • Diagnosis involved microbiological identification of the pathogen.
  • Clinical presentation and diagnostic challenges were noted.

Findings:

  • Actinomyces naeslundii identified as the causative agent of TKA infection.
  • Treatment required careful consideration due to the nature of the organism.
  • Therapeutic decision-making presented significant difficulties.

Implications:

  • This case underscores the importance of considering unusual pathogens in PJI.
  • It highlights the need for tailored treatment strategies for Actinomyces infections.
  • Further research may be needed to optimize management protocols for rare PJIs.

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