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Table 1 Intraobserver reliability per coordinate and in total: differences between the 1st and 2nd session. Distances are depicted in mm

From: Intra-and interobserver reliability of determining the femoral footprint of the torn anterior cruciate ligament on MRI scans

Observer X coordinate Y coordinate Z coordinate 3D Distance
Mean difference (SD) ICC Mean difference (SD) ICC Mean difference (SD) ICC Mean difference (SD)
Res-1 0.27 (1.77) 1.000 0.00 (2.06) 0.994 1.65 (1.78) 0.987 3.03 (1.95)
Res-2 0.58 (2.40) 0.999 2.12 (2.35) 0.984 1.34 (3.02) 0.979 4.58 (2.29)
Res-3 0.29 (1.60) 1.000 0.13 (2.70) 0.989 1.99 (1.91) 0.986 3.62 (2.00)
OS-1 0.51 (1.20) 1.000 1.28(1.54) 0.994 0.63 (1.97) 0.992 2.74 (1.49)
OS-2 0.13 (1.74) 1.000 1.03 (2.01) 0.993 1.52 (2.37) 0.985 3.55 (1.73)
OS-3 0.31 (2.70) 0.999 1.42 (1.43) 0.993 0.07 (1.33) 0.997 2.63 (2.45)
MSK-1 0.58 (4.11) 0.998 2.26 (3.19) 0.976 2.78 (3.51) 0.961 6.29 (3.41)
MSK-2 0.18 (1.89) 0.999 1.24 (2.19) 0.990 2.05 (3.17) 0.969 4.13 (2.52)
Total 0.35 n.a. 1.15 n.a. 1.50 n.a. 3.82
  1. Res resident orthopedic surgery, OS senior orthopedic surgeon, MSK fellowship trained musculoskeletal radiologist, SD Standard Deviation, ICC intraclass correlation coefficient, n.a. not applicable. The x-axis represents the lateral-to-medial direction, the y-axis the anterior-to-posterior direction and the z-axis the caudal-to-cranial direction