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Table 2 The results of the within-day 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

33 ± 6

0.64

0.13-0.86

-5.1- -1.5

90°/6 Nm

56 ± 8

57 ± 7

0.73

0.43-0.87

-2.7-1.5

90°/9 Nm

76 ± 10

74 ± 10

0.79

0.54-0.91

-2.7-1.5

90°/End-feel

72 ± 8

73 ± 8

0.66

0.33-0.85

-3.4-0.9

60°/3 Nm

33 ± 8

37 ± 6

0.67

0.33-0.85

-0.6- -2.7

60°/6 Nm

58 ± 8

61 ± 9

0.76

0.50-0.90

0.4-4.4

60°/9 Nm

77 ± 10

78 ± 11

0.86

0.62-0.95

-2.6-1.3

60°/End-feel

74 ± 8

74 ± 9

0.90

0.75-0.96

-1.9-2.0

30°/3 Nm

24 ± 8

31 ± 9

0.59

0.21-0.81

-4.7- -0.2

30°/6 Nm

55 ± 10

56 ± 10

0.87

0.72-0.95

-2.7-1.2

30°/9 Nm

79 ± 12

77 ± 12

0.94

0.87-0.98

-0.4-9.9

30°/End-feel

78 ± 11

75 ± 11

0.83

0.61-0.93

-0.3-5.2

  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