Table 3. Comparison of ROM between the Two Groups.

Parameter	ROM (°)		p-value
	Attune	PFC Sigma
Preoperative	118.0 ± 24.0	113.9 ± 17.2	0.200
3 Months	125.1 ± 10.8	121.5 ± 11.0	0.049
12 Months	131.7 ± 10.1	129.1 ± 9.0	0.100
2 Years	131.9 ± 12.8	132.1 ± 9.6	0.900
Improvement in ROM	14.5 ± 22.3	18.1 ± 17.3	0.300

Values are presented as mean ± standard deviation.

ROM: range of motion.