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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 tears

MR arthrography in cartilage abnormalities

Sensitivity

87.5%

66.7%

Specificity

71.4%

92.3%

PPV

91.3%

92.3%

NPV

62.5%

66.7%

  1. PPV positive predictive value, NPV negative predictive value