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Updated: May 12, 2026

Knee Arthrocentesis in Adults
Published on: February 25, 2022
Twelve-month outcome following septic arthritis in children
Annaleise R Howard-Jones1, David Isaacs, Paul J Gibbons
1Discipline of Paediatrics and Child Health, University of Sydney, Sydney, Australia.
Insights
Septic arthritis in children leads to complications in 10% of cases within a year. This study identified poor prognostic factors including culture positivity, young age, and male sex for pediatric septic arthritis.
Area of Science:
- Pediatric Orthopedics
- Infectious Diseases
- Clinical Outcomes Research
Background:
- Septic arthritis in children is a serious condition with potential long-term sequelae.
- Literature data on complication rates in pediatric septic arthritis over the past two decades is scarce.
- Understanding complication rates is crucial for managing pediatric joint infections.
Purpose of the Study:
- To determine the rate of clinically significant complications following septic arthritis in children.
- To identify prognostic factors associated with adverse outcomes in pediatric septic arthritis.
- To compare complication rates with previously published data.
Main Methods:
- Retrospective chart review of pediatric patients diagnosed with septic arthritis.
- Inclusion criteria: children admitted for septic arthritis.
- Data collected included demographics, causative organisms, and complications at 12 months post-diagnosis.
Main Results:
- 10% of children experienced clinically significant complications at 12 months post-diagnosis.
- Staphylococcus aureus was the most common pathogen (76%), with low rates of MRSA (8%).
- Poor prognostic factors identified were culture positivity, infancy (<2 years), and male sex.
Conclusions:
- The complication rate of 10% in this cohort is lower than historical rates (15-49%) reported in developed countries.
- Early identification of poor prognostic factors can aid in clinical management and follow-up.
- Further research is needed to elucidate long-term outcomes and optimize treatment strategies for pediatric septic arthritis.
Abstract:
There are very few literature data from the last two decades on the rate of complications following septic arthritis in children. This retrospective chart review shows that 10% of children admitted for septic arthritis to our institution suffered from clinically significant complications at 12 months following diagnosis. Forty-four children met our inclusion criteria, of whom 59% were male and 57% were culture positive. The most common causative organism was Staphylococcus aureus (76%), of which only 8% were methicillin-resistant S. aureus. Poor prognostic factors were culture positivity, infancy (<2 years) and male sex. Our rate of dysfunction is lower than most published rates, which have historically been in the range 15 to 49% in developed countries.
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