Table 4.

Interclass correlations between Raters 1 and for PACS and hard-copy radiographic measurements

Radiographic measurement	Number*	PACS			Hard-copy radiographs
		Correlation	Lower 95% confidence limit	Upper 95% confidence limit	Correlation	Lower 95% confidence limit	Upper 95% confidence limit
Right LDFA	80	0.789	0.652	0.925	0.918	0.829	1.000
Left LDFA	80	0.930	0.848	1.000	0.945	0.872	1.000
Right MPTA	80	0.665	0.499	0.831	0.697	0.537	0.856
Left MPTA	80	0.931	0.850	1.000	0.943	0.870	1.000
LLD	78	0.984	0.945	1.000	0.963	0.902	1.000
Right femur	80	0.801	0.668	0.934	0.987	0.951	1.000
Left femur	80	0.886	0.783	0.989	0.978	0.931	1.000
Right tibia	78	0.896	0.796	0.996	0.998	0.986	1.000
Left tibia	80	0.893	0.794	0.993	0.932	0.852	1.000
Delta tibia	78	0.915	0.824	1.000	0.941	0.865	1.000
Delta femur	80	0.925	0.804	0.677	0.959	0.885	1.000

LDFA = lateral distal femoral angle; MPTA = medial proximal tibial angle; LLD = limb length discrepancy; * the number of pairs analyzed for that particular analysis (radiographic measurement).