Kocher Criteria for Septic Arthritis

Distinguishes septic arthritis from transient synovitis in a child with an inflamed hip.

Inability to Tolerate Weight Bearing

Temp > 38.5°C / 101.3°F

ESR > 40mm/hr

WBC > 12,000 cells/mm3

Interpretation

Source: Kocher MS, Zurakowski D, Kasser JR. Differentiating between septic arthritis and transient synovitis of the hip in children: an evidence-based clinical prediction algorithm. J Bone Joint Surg Am. 1999 Dec;81(12):1662-70.
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