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Scores & Severity

Kocher Criteria (Septic Hip)

Predicts the probability of septic arthritis of the hip versus transient synovitis from four predictors.

Scope: Derived in specific cohorts; external validation shows lower probabilities. Use alongside ultrasound, CRP and clinical judgement — do not rule out septic arthritis on the score alone.

Inputs

FieldUnitNotes
Non-weight-bearing on the affected side
Fever >38.5°C
ESR >40 mm/hr
Serum WBC >12,000/µL

FAQ

What is the Kocher Criteria (Septic Hip)?

Predicts the probability of septic arthritis of the hip versus transient synovitis from four predictors.

What inputs does the Kocher Criteria (Septic Hip) need?

Non-weight-bearing on the affected side, Fever >38.5°C, ESR >40 mm/hr, Serum WBC >12,000/µL.

Are there any limitations?

Derived in specific cohorts; external validation shows lower probabilities. Use alongside ultrasound, CRP and clinical judgement — do not rule out septic arthritis on the score alone.

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