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Table 1 The results of the one-week-apart reliability evaluation of the external measurement device presented in means and Standard Deviations given in degrees (M 1 = measurement occasion one and M 2 = measurement occasion 2), and calculated with Intraclass Correlation Coefficient2,1 (ICC2,1), 95% Confidence Interval (CI) of ICC and 95% CI between M 1 and M 2.

From: Measurements of knee rotation-reliability of an external device in vivo

Angle/applied torque M 1 m ± SD M 2 m ± SD ICC2,1 95% CI of ICC 95% CI of M 1 and M 2
90°/3 Nm 30 ± 6 29 ± 6 0.49 0.04-0.77 -2.0-3.1
90°/6 Nm 56 ± 9 56 ± 5 0.67 0.31-0.86 -1.6-3.0
90°/9 Nm 76 ± 9 76 ± 7 0.80 0.56-0.92 -1.2-1.6
90°/End-feel 72 ± 8 71 ± 7 0.65 0.32-0.84 -1.3-2.2
60°/3 Nm 33 ± 8 33 ± 4 0.24 -0.15-0.59 -3.8-3.7
60°/6 Nm 58 ± 8 61 ± 9 0.50 0.11-0.76 -2.6-3.8
60°/9 Nm 77 ± 10 75 ± 8 0.82 0.60-0.92 -0.2-3.9
60°/End-feel 74 ± 8 73 ± 8 0.76 0.48-0.90 -0.4-3.2
30°/3 Nm 28 ± 8 29 ± 7 0.22 -0.48-0.40 -4.9-2.9
30°6 Nm 55 ± 10 53 ± 8 0.50 0.11-0.77 -0.4-3.5
30°/9 Nm 79 ± 12 77 ± 11 0.84 0.65-0.93 -0.6-4.6
30°/End-feel 78 ± 11 76 ± 9 0.82 0.64-0.93 -0.4-5.6
  1. Calculations were made at three different flexion angles (90°, 60° and 30°) with four different applied torques (3, 6 and 9 Nm as well as the examiner's apprehension of end-feel) of the total internal-external knee joint rotation