Table 2.

Angles of intra-operative cuts

	OMNIbot	MAKO	P value
Femur coronal cut, mean ± STD (range)	2.7° ± 1.5 valgus (6 valgus - 2 varus)	1.6°± 1.7 valgus (6 valgus - 3 varus)	<0.001*
Femur Sagittal cut, mean ± STD (range)	2.2° ± 1.6 flexion (5 flexion – 2 extension)	2.1°± 1.7 Flexion (6 flexion – 4 extension)	0.6
Rotation Femur PCA, mean ± STD (range)	0.1° ± 0.9 external rotation (3 external – 2 internal)	2.3°± 2.1 external rotation (7 external - 4 internal)	<0.001*
Rotation Femur TEA, mean ± STD (range)	0.3°± 3.3 external rotation (8 external – 9 internal)	0.3°± 2.2 external rotation (6 external to 5 internal)	0.9
Tibia Coronal cut, mean ± STD (range)	2.1°± 1.1 varus (6 varus – 2 valgus)	2.6°± 1.3 varus (5 varus - 3 valgus)	<0.001*
Tibia Sagittal cut, mean ± STD (range)	3.6°± 1.2 slope (1 – 9)	3.4°± 0.8 slope (1 – 6)	0.02*

All measurements in degrees *p<0.05 compared using independent t-tests ** p<0.05 compared using chi-square