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Table 2 The ICCs for intra-observer reliability

From: Intra- and inter‐observer reliability of implant positioning evaluation on a CT-based three‐dimensional postoperative matching system for total knee arthroplasty

Index

Component

Alignment

Rater

ICC

95 %CI

Traditional mechanical axis

Femoral

Varus - Valgus

1

0.92

0.78–0.97

2

0.98

0.94–0.99

3

0.87

0.66–0.95

Flexion - Extension

1

0.49

0.00–0.79

2

0.80

0.51–0.93

3

0.80

0.51–0.93

Tibial

Varus - Valgus

1

0.78

0.47–0.92

2

0.88

0.69–0.96

3

0.93

0.81–0.98

Anterior - Posterior Slope

1

0.91

0.76–0.97

2

0.94

0.83–0.98

3

0.91

0.76–0.97

Implant-based axis

Femoral

Varus - Valgus

1

0.93

0.81–0.98

2

0.97

0.92–0.99

3

0.85

0.62–0.95

Flexion - Extension

1

0.50

0.02–0.79

2

0.72

0.36–0.89

3

0.75

0.41–0.91

Tibial

Varus - Valgus

1

0.86

0.64–0.95

2

0.86

0.64–0.95

3

0.94

0.83–0.98

Anterior - Posterior Slope

1

0.93

0.81–0.98

2

0.95

0.86–0.98

3

0.89

0.71–0.96

  1. CI confidence interval