Pediatric Acute Hematogenous Osteomyelitis

Area of Science:

• Pediatric Orthopedics
• Infectious Diseases
• Epidemiology

Background:

• Osteomyelitis presents a significant challenge in New Zealand's pediatric population.
• This study examines acute hematogenous osteomyelitis (AHO) cases to identify trends and inform management.

Purpose of the Study:

• To analyze trends in pediatric AHO in Auckland over a 10-year period.
• To guide effective management strategies for AHO in the New Zealand context.

Main Methods:

• Retrospective review of clinical records from two Auckland pediatric orthopedic departments (1997-2008).
• Inclusion of 813 pediatric AHO cases.
• Level IV-retrospective case series.

Main Results:

• AHO incidence decreased over the decade (1:4000), with male predominance and overrepresentation of Maori and Pacific Islanders.
• Staphylococcus aureus was the most common pathogen (low MRSA incidence at 2%).
• Average antibiotic treatment was 44 days, 44% required surgery, yielding a 7% recurrence rate and 15% complication rate.

Conclusions:

• AHO incidence remains high in New Zealand, particularly among Maori and Pacific Islanders.
• Low MRSA rates support flucloxacillin as empiric treatment; S. aureus is the main pathogen.
• Low relapse rates may be linked to longer antibiotic courses, though this increases complication risk. Prompt diagnosis and tailored treatment are key to minimizing severe outcomes.