Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 2 Sensitivity, specificity, PPV and NPV are shown for group A and B lesions
From: Magnetic resonance arthrography for femoroacetabular impingement surgery: is it reliable?
Dislocation | Arthroscopy | All | |
|---|---|---|---|
Cam deformity | |||
Sensitivity (%) | 100 | 100 | 100 |
Specificity (%) | 100 | 100 | 100 |
PPV (%) | 100 | 100 | 100 |
NPV (%) | 100 | 100 | 100 |
Accuracy (%) | 100 | 100 | 100 |
p value | <0.001 | <0.001 | <0.001 |
Femoral head cartilage injury | |||
Sensitivity (%) | 50 | 44 | 46 |
Specificity (%) | 82 | 73 | 81 |
PPV (%) | 40 | 57 | 55 |
NPV (%) | 88 | 62 | 73 |
Accuracy (%) | 76 | 60 | 68 |
p value | 0.172 | 0.432 | 0.095 |
Os acetabuli | |||
Sensitivity (%) | 100 | 100 | 100 |
Specificity (%) | 100 | 100 | 100 |
PPV (%) | 100 | 100 | 100 |
NPV (%) | 100 | 100 | 100 |
Accuracy (%) | 100 | 100 | 100 |
p value | <0.001 | <0.001 | <0.001 |
Labral tear | |||
Sensitivity (%) | 100 | 81 | 91 |
Specificity (%) | 100 | 75 | 86 |
PPV (%) | 100 | 93 | 97 |
NPV (%) | 100 | 50 | 67 |
Accuracy (%) | 100 | 80 | 93 |
p value | <0.001 | 0.028 | <0.001 |
Acetabular cartilage injury | |||
Sensitivity (%) | 67 | 75 | 69 |
Specificity (%) | 89 | 88 | 88 |
PPV (%) | 89 | 60 | 78 |
NPV (%) | 67 | 93 | 81 |
Accuracy (%) | 76 | 85 | 80 |
p value | 0.034 | 0.068 | 0.04 |