Table 2 Sensitivity, specificity, positive, and negative predictive value, and accuracy values for each knee quadrant. The values are expressed in percentage (CI95% in brackets)

Medial femoral condyle

64.2 (44.6–83.7)

87.3 (82.2–92.4)

61.8 (49.0–74.7)

88.3 (83.4–93.3)

81.6 (75.9–86.6)

Lateral femoral condyle

60.6 (40.6–80.6)

94.6 (91.3–97.9)

66.7 (49.8–83.5)

93.1 (89.8–96.7)

89.4 (84.6–93.2)

Medial tibial plateau

79.5 (63.0–96.0)

85.7 (80.0–91.5)

75.6 (66.3–84.9)

88.2 (82.8–93.7)

83.5 (77.8–88.2)

Lateral tibial plateau

60.5 (40.5–80.4)

96.0 (93.1–98.9)

78.8 (64.9–92.7)

90.8 (86.6–95.0)

89.0

(84.1–92.8)