Accuracy of different diagnostic tests for early, delayed and late prosthetic joint infection.

0.790, ( p = 0.01) but not that of early PJI ( p = 0.64), however, delayed PJI had a near-significant trend, 0.849 vs. 0.866, ( p = 0.07).

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Second, due to the small sample size for early and delayed PJI, the study may have lacked the ability to detect slight differences among these two types of infection and the diagnostic techniques compared and, some results approached the borderline of significance; also the small sample size may be a limitation towards conducting further analysis by the operative site (hip vs knee), with a larger sample size we might have been able to draw stronger conclusions.

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The combined measurement of preoperative parameters such as CRP and synovial fluid produced the highest preoperative predictive power for diagnosing late cases with a marked trend for delayed PJI.

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