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Septic Arthritis Caused by Pasteurella multocida: A Source Control Issue.

Beth Schwartz1, Ashish Bhargava1

  • 1Internal Medicine, Ascension St. John Hospital, Detroit, USA.

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A cat bite led to a rare Pasteurella multocida septic joint infection. Surgical intervention was necessary when antibiotics failed, highlighting the importance of source control in such cases.

Keywords:
animal-related injuriescat bitehand infectioninfectious arthritispasteurella multocidaseptic arthritis

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Area of Science:

  • Infectious Diseases
  • Orthopedic Surgery
  • Bacteriology

Background:

  • Pasteurella multocida is a common cause of soft tissue infections from animal bites.
  • Septic arthritis is a serious joint infection that requires prompt treatment.

Observation:

  • A 66-year-old female presented with a septic metacarpophalangeal joint after a cat bite.
  • Despite appropriate outpatient antibiotic therapy, her condition did not improve.

Findings:

  • The patient's septic joint was caused by Pasteurella multocida.
  • This rare presentation of septic arthritis, seen in less than 4% of cases, required surgical management.

Implications:

  • Failure to improve with antibiotics suggests a need for source control, often surgical intervention.
  • This case underscores the importance of considering surgical management for persistent joint infections after animal bites.
  • Early recognition and intervention are crucial for favorable outcomes in septic arthritis.