Table 2.

Comparison of outliers of mechanical axis, femoral valgus angle and tibial valgus angle in the three groups

	No. of postoperative component alignments more than 3° deviation
	Group A N = 55	Group B N = 63	Group C N = 80	p value
Mechanical axis >3°	2 (3.7%)	32 (50.8%)	4 (5.0%)	<0.001*
Component alignments >3°
Femoral valgus angle	3 (5.5%)	33 (52.4%)	5 (6.2%)	<0.001*
Tibial valgus angle	1 (1.8%)	4 (6.3%)	2 (2.5%)	0.335

Group A: osteoarthritis with marked coronal femoral bowing; all underwent CAS-TKA. Group B: osteoarthritis with marked coronal femoral bowing; all underwent conventional TKA. Group C: osteoarthritis without marked coronal femoral bowing; all underwent conventional TKA. The values are given as the n (%); p values for between-group comparison were determined by chi squared tests.

*Statistically significant (p value < 0.05).