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. 2012 Nov;85(1019):e1032–e1037. doi: 10.1259/bjr/26261821

Table 4. Sensitivity and specificity of extrusion ratios in the diagnosis of meniscal root tears.

Sensitivity (%)
Specificity (%)
Measurement Reader 1 Reader 2 Reader 1 Reader 2
Extrusion with 2.8 mm threshold 63 (15/24) 58 (14/24) 91 (39/43) 98 (42/43)
Extrusion with 3 mm threshold 54 (13/24) 54 (13/24) 98 (42/43) 98 (42/43)
Extrusion with 3.2 mm threshold 46 (11/24) 42 (10/24) 98 (42/43) 98 (42/43)
Extrusion with 10% threshold 79 (19/24) 79 (19/24) 86 (37/43) 91 (39/43)
Extrusion with 11% threshold 70 (17/24) 71 (17/24) 93 (40/43) 95 (41/43)
Extrusion with 12% threshold 50 (12/24) 63 (15/24) 95 (41/43) 98 (42/43)

Numbers in parentheses are the number of patients used to calculate the percentages.