Septicemia in a child undergoing callotasis limb lengthening

Area of Science:

• Orthopedic surgery
• Pediatric orthopedics
• Infectious disease

Background:

• Leg length discrepancy is a common orthopedic challenge in children.
• Femoral callotasis lengthening with external fixators is a standard treatment.
• Post-operative infections are a known complication of external fixation devices.

Observation:

• A pediatric patient experienced a pin site infection 17 days post-femoral callotasis.
• The infection recurred on post-operative day 34 with systemic symptoms (malaise, vomiting, pyrexia).
• Serology confirmed Staphylococcus aureus enterotoxin as the causative agent.

Findings:

• The external fixator pins likely served as a nidus for persistent bacterial infection.
• Staphylococcus aureus enterotoxin led to a toxic systemic response.
• Removal of the fixator was necessary for patient recovery, compromising the planned limb lengthening.

Implications:

• This case underscores the critical importance of vigilant pin site monitoring and infection control in pediatric bone lengthening.
• Early recognition of systemic toxicity secondary to infection is vital for patient survival.
• Alternative fixation methods or enhanced infection prophylaxis may be considered in patients with a history of osteomyelitis.