Table 4. Comparison of Questionnaire-Based Outcome Measures between the Two Groups.

Score (range)		Attune	PFC Sigma	p-value
WOMAC (0–96)
	Preoperative	43.4 ± 13.2	41.7 ± 13.2	0.4
	3 Months	19.6 ± 16.7	19.6 ± 13.9	0.9
	12 Months	13.6 ± 13.5	14.8 ± 10.2	0.6
	2 Years	10.4 ± 9.9	10.6 ± 10.4	0.9
New Knee Society Score (0–255)
	Preoperative	96.9 ± 24.1	94.3 ± 25.4	0.5
	3 Months	174.8 ± 34.2	176.9 ± 24.0	0.6
	12 Months	195.2 ± 27.8	188.6 ± 23.3	0.1
	2 Years	200.9 ± 27.8	198.5 ± 32.7	0.6
Objective Knee Score (0–100)
	Preoperative	42.5 ± 10.4	42.2 ± 13.4	0.9
	3 Months	90.5 ± 8.6	91.8 ± 6.0	0.3
	12 Months	96.4 ± 6.1	96.1 ± 4.8	0.7
	2 Years	96.5 ± 5.7	96.5 ± 6.2	0.9
Subjective Knee Score (0–155)
	Preoperative	54.7 ± 17.8	52.8 ± 17.1	0.5
	3 Months	86 ± 24.1	82.7 ± 22.7	0.4
	12 Months	98.7 ± 24.0	92.5 ± 21.0	0.1
	2 Years	103.8 ± 25.1	105.6 ± 25.4	0.7
Function Score (0–100)
	Preoperative	29.4 ± 12.3	30.1 ± 11.7	0.7
	3 Months	47.7 ± 14.0	45.7 ± 15.1	0.4
	12 Months	56.1 ± 17.6	51.4 ± 16.4	0.1
	2 Years	61.3 ± 19.4	63.8 ± 21.2	0.5

Values are presented as mean ± standard deviation.

WOMAC: Western Ontario and McMaster Universities Osteoarthritis Index.