Table 1. Comparison of Demographic Parameters between Groups 1 and 2.

Variable	Group 1	Group 2	p-value
No. of patients	64	56	-
Sex (male:female)	14:50	9:47	0.649
Mean age (yr)	67	69	0.192
Body mass index (kg/m2)	30.6	29.6	0.384
Deformity (varus)	10.6	10	0.509
Preoperative extension (°)	5.8	4.5	0.141
Preoperative flexion (°)	114.6	120.9	0.056
Extension at 3 months (°)	0.4	0.6	0.560
Flexion at 3 months (°)	122.9	123.3	0.817