No difference in long-term functional outcomes or survivorship after total knee arthroplasty with or without computer navigation: a 17-year survivorship analysis

Table 2 Comparing the range of motion, Knee Society knee score and Knee Society function score by (a) groups, (b) time points

(a) Comparing NAV-TKR and CONV-TKR groups
	NAV-TKR	CONV-TKR	p-Value
Pre-operative
Range of motion (degrees)	92.35 ± 19.10	94.86 ± 17.78	0.42
Knee Society knee score	28.84 ± 13.35	32.35 ± 15.75	0.17
Knee Society function score	52.18 ± 11.34	50.47 ± 16.18	0.91
Post-operative
Range of motion (degrees)	98.47 ± 13.63	103.66 ± 13.62	0.02
Knee Society knee score	90.57 ± 12.18	89.95 ± 15.75	0.80
Knee Society function score	59.15 ± 22.04	55.48 ± 29.49	0.21

(b) Comparing pre-operative and post-operative scores
	Pre-operative	Post-operative	p-Value
NAV-TKR
Range of motion (degrees)	92.35 ± 19.10	98.47 ± 13.63	0.02
Knee Society knee score	28.84 ± 13.35	90.57 ± 12.18	< 0.01
Knee Society function score	52.18 ± 11.34	59.15 ± 22.04	0.04
CONV-TKR
Range of motion (degrees)	94.86 ± 17.78	103.66 ± 13.62	< 0.01
Knee Society knee score	32.35 ± 15.75	89.95 ± 15.75	< 0.01
Knee Society function score	50.47 ± 16.18	55.48 ± 29.49	0.04

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