Table 3.

Visual analogue scale (VAS) for neck and arm pain

	Preoperatively		1 week		3 weeks		6 weeks		12 weeks		24 weeks
	Prosthesis	ACDF	Prosthesis	ACDF	Prosthesis	ACDF	Prosthesis	ACDF	Prosthesis	ACDF	Prosthesis	ACDF
Neck pain	6.2 (1.2)	6.4 (0.9)	3.3 (0.6)	2.9 (0.7)	3.4 (0.6)	2.2 (0.7)	2.4 (0.5)	1.8 (0.5)	2.5 (0.6)	1.9 (0.5)	2.8 (0.4)	2.0 (0.5)
Arm pain	7.6 (1.4)	7.2 (1.7)	1.6 (0.4)	1.5 (0.4)	1.5 (0.4)	1.7 (0.4)	1.3 (0.3)	1.5 (0.3)	1.6 (0.3)	1.7 (0.3)	1.4 (0.2)	1.7 (0.3)

Mean value and standard deviation (SD) are given for each time