Notching is less, if femoral component sagittal positioning is planned perpendicular to distal femur anterior cortex axis, in navigated TKA

Table 2 Intra-observer and inter-observer variability for notch depth

Parameters	Study group	ICC or r_s	95% CI	p-Value
Intra-observer variability	FBRD group	ICC = 0.99	0.99–0.99	< 0.001
Intra-observer variability	FBRE group	ICC = 0.98	0.99–0.99	< 0.001
Inter-observer variability	FBRD group	r_s = 0.999	0.79–0.95	< 0.001
Inter-observer variability	FBRE group	r_s = 0.998	0.80–0.99	< 0.001

ICC intra-class correlation coefficient; r_s Spearman’s correlation; CI confidence interval; FBRD femur anterior bowing registration disabled; FBRE femur anterior bowing registration enabled
p < 0.05 is considered statistically significant (bold)

ISSN: 2234-2451