Table 1.
Diagnostic performance of magnetic resonance imaging in the diagnosis of ramp lesions, meniscotibial ligament lesions, peripheral fibrocartilage meniscal lesions, having arthroscopy as reference standard in a series of 56 patients
| Ramp lesion | Meniscotibial ligament lesion | Peripheral meniscal lesion | |
|---|---|---|---|
| True positive | n = 37 | n = 23 | n = 17 |
| False positive | n = 2 | n = 6 | n = 1 |
| False negative | n = 1 | n = 1 | n = 1 |
| True negative | n = 16 | n = 26 | n = 37 |
| Sensitivity |
97.4% (86.2–99.9%) |
95.8% (78.9–99.9%) |
94.4% (72.7–99.9%) |
| Specificity |
88.9% (65.3–98.6%) |
81.3% (63.6–92.8%) |
97.4% (86.2–99.9%) |
| PPV |
94.9% (82.7–99.4%) |
79.3% (60.3–90.2%) |
94.4% (72.7–99.9%) |
| NPV |
94.1% (71.3%–99.9%) |
96.3% (81.0%–99.9%) |
97.4% (86.2%–99.9%) |
| Accuracy |
94.6% (85.1–98.9%) |
87.5% (75.9–94.8%) |
96.4% (87.7–99.6%) |
Note: 95% confidence intervals are indicated in brackets. PPV positive predictive value; NPV negative predictive value