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Parvimonas micra causing native hip joint septic arthritis
Patrick M Ryan1, Bernard F Morrey2
1Department of Orthopedics, Baylor Scott and White Medical Center - Temple, Temple, Texas.
Proceedings (Baylor University. Medical Center)
|July 5, 2021
Abstract:
Parvimonas micra is a bacterium normal to oral and gastrointestinal flora that has been implicated in cases of discitis, osteomyelitis, and prosthetic joint infections, often involving dental procedures or periodontal disease. It is an extremely rare cause of infection outside of these circumstances. We describe a case of septic arthritis of the native hip joint due to P. micra.
Insights
Parvimonas micra, a common oral bacterium, rarely causes infections outside the gut. This case highlights P. micra as a cause of septic arthritis in a native hip joint.
Area of Science:
- Microbiology
- Infectious Diseases
- Orthopedics
Background:
- Parvimonas micra is a commensal bacterium of the oral and gastrointestinal tracts.
- P. micra is typically associated with localized infections, particularly those involving the spine (discitis) or bones (osteomyelitis), and prosthetic joint infections.
- Infections caused by P. micra outside of these common sites are exceedingly rare.
Observation:
- This report details a unique case of septic arthritis affecting a native hip joint.
- The causative agent identified in this patient was Parvimonas micra.
- The patient's presentation and clinical course were consistent with a native joint infection.
Findings:
- Parvimonas micra can be an etiological agent of septic arthritis in native joints.
- This finding expands the spectrum of P. micra-associated infections.
- The case underscores the importance of considering less common pathogens in joint infections.
Implications:
- Clinicians should consider Parvimonas micra in the differential diagnosis of septic arthritis, even in the absence of typical risk factors like dental procedures or periodontal disease.
- This case may prompt further investigation into the pathogenic potential of P. micra in diverse anatomical locations.
- Understanding the broader pathogenic capabilities of P. micra can improve diagnostic accuracy and treatment strategies for invasive infections.
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