Pediatrics · Emergency Medicine · Orthopedics
Philadelphia Pediatric Knee Rule calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Result
0
Philadelphia pediatric knee rule negative
Interpret only within the cited source population and criteria; use alongside complete clinical assessment.
Formula inputs
- unable to walk
- tender fibula
- tender patella
- esr gt 40
- fever
Primary source
Flynn JM et al. Knee radiography after acute knee injury in children: a prospective study. J Pediatr Orthop. DOI: 10.1097/01241398-200507000-00008. PMID: 15958864. Scope: Philadelphia pediatric knee rule counts inability to walk, fibular tenderness, patellar tenderness, ESR >40 mm/h, and fever; any criterion indicates fracture risk warranting radiography. (2005)
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