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

Table 3 The ICCs for inter-observer reliability

Index	Component	Alignment	ICC	95 %CI
Traditional mechanical axis	Femoral	Varus – Valgus	0.97	0.94–0.99
	Femoral	Flexion - Extension	0.89	0.78–0.95
	Tibial	Varus - Valgus	0.90	0.80–0.95
	Tibial	Anterior - Posterior Slope	0.94	0.88–0.97
Implant-based axis	Femoral	Varus - Valgus	0.96	0.92–0.98
	Femoral	Flexion - Extension	0.82	0.65–0.91
	Tibial	Varus - Valgus	0.74	0.52–0.87
	Tibial	Anterior - Posterior Slope	0.96	0.92–0.98

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