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Primary obturator externus pyomyositis in a child presenting as hip pain: a case report

Abhishek Kumar1, David Anderson

  • 1Department of Orthopaedics, Woodend Hospital, Aberdeen, United Kingdom. drabhi.kp@gmail.com

Pediatric Emergency Care
|February 19, 2008
PubMed

Insights

Pediatric hip pain can mimic septic arthritis. This case highlights isolated obturator externus muscle abscess, emphasizing diagnostic challenges and the importance of advanced imaging for rare hip conditions.

Area of Science:

  • Pediatric Orthopedics
  • Pediatric Infectious Diseases
  • Pediatric Radiology

Background:

  • Hip pain in children presents a diagnostic challenge, with common differentials including septic arthritis, Perthes disease, and slipped capital femoral epiphysis.
  • Pyomyositis, particularly rare hip muscle abscesses, can mimic septic arthritis due to indolent presentation and nonspecific laboratory findings.

Observation:

  • This report details an 11-year-old child with an isolated obturator externus muscle abscess.
  • The presentation was similar to septic arthritis of the hip, complicating diagnosis.

Findings:

  • Magnetic resonance (MR) imaging is crucial for diagnosing hip muscle abscesses, identifying early muscular changes.
  • Laboratory investigations are often nonspecific, underscoring the reliance on advanced imaging.

Implications:

  • Early and accurate diagnosis of rare hip conditions like obturator externus abscess is vital for effective management.
  • Prompt antibiotic therapy and potential surgical drainage are key treatment components for favorable outcomes in pediatric hip abscesses.

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