Table 2 Weights used for the predictive score based on respective relative risks. 0–22 SYNC3 points can be reached by addition of respective weights on day three after surgery. If CRP levels decrease less than 2 mg/dl within five days, another four points are added, resulting in the SYNC5 score.

From: Early postoperative laboratory parameters are predictive of initial treatment failure in acute septic arthritis of the knee and shoulder joint

Variable

Weight

Symptom duration > 4 days

5

CCI ≥ 3

4

Positive culture results

5

CRP reduction by day three post OP < 0.7 mg/dl

3

Neutrophilic granulocyte reduction by day three post OP < 2.3 G/l

5

CRP reduction by day five post OP < 2 mg/dl

4

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