Results of studies examining preoperative ESR and CRP for diagnosis of prosthetic joint infection.

*Diagnostic cutoff level determined using receiver operating characteristic curve analysis.
**Patients with connective-tissue disorders were excluded from analysis.
***Patients with a preoperative diagnosis of inflammatory arthritis were excluded from analysis.
****Patients with a systemic disease or a condition that could result in an abnormal ESR or CRP, such as rheumatoid arthritis or other inflammatory arthritides, were excluded from analysis.
*****Patients with a confounding factors that can elevate inflammatory markers (inflammatory disorders, collagen vascular disease, urinary tract infection, hepatitis, demyelinating neuropathy or malignancy), were excluded from analysis.