ESR1 and osteomyelitis: The best cutoff points and yielded sensitivity and sensitivity of PCT, ESR and CRP at that points in predicting osteomyelitis were 0.35 ng/ml (sensitivity of 86.1% and specificity of 45.3%), 56.5 mm/hours (sensitivity of 95.8% and specificity of 50.0%) and 44 mg/ml (sensitivity of 90.3% and specificity of 57.0%), respectively.