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Table 4 Measures of diagnostic performance of MR arthrography (sensitivity, specificity, PPV, and NPV) for detection of labral tears and chondral abnormalities in FAI patients with reference to arthroscope results

From: Magnetic Resonance Arthrography, a valuable pre-operative imaging modality in femoro-acetabular impingement

 MR arthrography in labral tearsMR arthrography in cartilage abnormalities
Sensitivity87.5%66.7%
Specificity71.4%92.3%
PPV91.3%92.3%
NPV62.5%66.7%
  1. PPV positive predictive value, NPV negative predictive value