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Atypical Presentation of Periprosthetic Joint Infection After Total Knee Arthroplasty due to Parvimonas micra

Dustin Randall1, Young Jee2, Aimen Vanood1

  • 1Oakland University William Beaumont School of Medicine, Auburn Hills, MI, USA.

Arthroplasty Today
|November 18, 2020
PubMed

Insights

Oral pathogen Parvimonas micra can cause periprosthetic joint infection, even in healthy individuals. Thorough dental evaluation before arthroplasty is crucial to prevent P. micra infections.

Area of Science:

  • Microbiology
  • Orthopedic Surgery
  • Infectious Diseases

Background:

  • Limited literature exists on Parvimonas micra causing periprosthetic joint infections (PJI).
  • Previous PJI cases linked to P. micra involved immunocompromised patients with dental issues.

Observation:

  • A healthy patient with recurrent gingivitis developed PJI after total knee arthroplasty.
  • The infection was solely caused by the oral pathogen Parvimonas micra.
  • Early symptoms included progressive joint stiffness, leading to timely diagnosis via aspiration.

Findings:

  • This case highlights P. micra as a causative agent in a healthy patient without typical risk factors.
  • The patient required a two-stage revision surgery with a constrained implant due to the infection.

Implications:

  • Investigating dental history and treating periodontal disease before arthroplasty is vital.
  • This emphasizes the need to consider oral pathogens in PJI, even in seemingly healthy patients.
  • Early diagnosis and intervention are critical for successful PJI management.
Keywords:
Parvimonas micraPeptostreptococcus microsPeriprosthetic joint infectionStiffnessTotal knee arthroplasty

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