Box 2.
Probability of septic arthritis depending on the number of positive findings on assessment
| Kocher criteria to determine risk for paediatric septic arthritis5 | |
|---|---|
| Non-weight bearing on affected side | Probability dependent on number of findings: 1 = 3% 2 = 40% 3 = 93% 4 = 99% |
| Erythrocyte sedimentation rate >40 mm/hour | |
| Temperature >38.5°C | |
| White cell count >12 000 cells/ml | |