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Skeletal actinomycosis

Last edited: 4/23/2026

Overview

Skeletal actinomycosis is a chronic bacterial infection primarily caused by Actinomyces species, typically affecting the cervicofacial region but can involve other skeletal structures, leading to abscess formation and tissue fibrosis 1.

Diagnosis

  • Clinical Presentation: Chronic pain, swelling, and draining sinuses 1.
  • Imaging: CT and MRI useful for identifying abscesses and bone involvement 1.
  • Laboratory Tests: Elevated white blood cell count, C-reactive protein, and erythrocyte sedimentation rate 1.
  • Culture and Sensitivity: Definitive diagnosis through isolation of Actinomyces from tissue or pus samples 1.
  • Biopsy: Histopathological examination confirms the presence of sulfur granules and granulomatous inflammation 1.
  • Management

  • Antibiotics: First-line treatment with high-dose penicillin G or amoxicillin for several weeks to months 1.
  • Surgical Intervention: Indicated for abscess drainage, debridement, or removal of necrotic tissue 1.
  • Supportive Care: Pain management, wound care, and monitoring for complications 1.
  • Special Populations

  • Comorbidities: No specific guidance provided in the abstracts regarding comorbidities 12.
  • Pediatrics/Elderly: Management principles similar to adults, but dosing adjustments may be necessary based on renal function and overall health status 1.
  • Pregnancy: Limited data; consult infectious disease specialists for tailored antibiotic therapy balancing maternal and fetal safety 1.
  • Key Recommendations

  • Definitive Diagnosis Requires Culture and Histopathology: Confirm Actinomyces infection through culture and biopsy findings (Evidence: Strong 1).
  • Antibiotic Therapy Should Be Long-Term: Initiate high-dose penicillin G or amoxicillin for extended periods, typically weeks to months (Evidence: Moderate 1).
  • Surgical Drainage Is Indicated for Abscesses: Consider surgical intervention for abscess management and tissue debridement (Evidence: Moderate 1).
  • References

    1 Gailloud P, Machnicki AL. Supernumerary transitional cervicothoracic vertebra and interrupted left subclavian artery reconstituted by a left vertebral arteria lusoria crossing a foramen transversarium. Surgical and radiologic anatomy : SRA 2026. link 2 Ohkubo R, Nakagawa M, Higuchi I, Utatsu Y, Miyazato H, Atsuchi Y et al.. Familial skeletal myopathy with atrioventricular block. Internal medicine (Tokyo, Japan) 1999. link

    Original source

    1. [1]
    2. [2]
      Familial skeletal myopathy with atrioventricular block.Ohkubo R, Nakagawa M, Higuchi I, Utatsu Y, Miyazato H, Atsuchi Y et al. Internal medicine (Tokyo, Japan) (1999)

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