The Egyptian Journal of Neurology, Psychiatry and Neurosurgery

Table 8 Comparison between the two study groups as regard clinical and radiological findings preoperatively and postoperatively

From: Single level anterior cervical discectomy and fusion versus dynamic cervical implant: clinical and radiological outcome

	GROUP				P	Significance
	ACDF		DCI
	Mean	± SD	Mean	± SD
Cobb’s angle pre	13.79	3.10	14.07	3.47	0.822*	NS
Cobb’s angle post 12 months	16.29	3.17	15.45	3.84	0.522*	NS
Pre VAS-N	5.13	1.30	4.53	1.41	0.236*	NS
Post VAS-N 1 month	1.73	0.7	1.53	0.74	0.455*	NS
Post VAS-N 3 months	0.87	0.74	1.6	1.76	0.149*	NS
Post VAS-N 12 months	0.53	0.64	0.6	0.83	0.807*	NS
Pre VAS-A	7.87	0.74	7.27	1.03	0.078*	NS
Post VAS-A 1 month	1.20	0.86	0.73	0.59	0.095*	NS
Post VAS-A 3 months	0.6	0.63	0.33	0.49	0.207*	NS
Post VAS-A 12 months	0.33	0.49	0.2	0.41	0.426*	NS
Pre NDI	54.20	10.90	46.47	10.88	0.062*	NS
Post NDI 1 month	29.27	5.62	29.20	6.48	0.976*	NS
Post NDI 3 months	25.33	4.35	30.33	14.68	0.223*	NS
Post NDI 12 months	23.93	3.49	23.47	4.76	0.762*	NS
Subsidence 1 month (mm)	5.65	0.50	5.59	0.49	0.742*	NS
Subsidence 3 months	5.42	0.48	4.96	0.65	0.035*	S
Subsidence 12 months	5.33	0.45	4.49	0.79	0.002*	HS
Fusion at 12 months
No	3	20.0%	11	73.3%	0.003**	HS
Yes	12	80.0%	4	26.7%	0.003**	HS

*Student t test
**Chi-square tests
ACDF Anterior cervical discectomy and fusion, DCI Dynamic cervical implant, VAS-N Visual analogue scale for neck pain, VAS-A Visual analogue scale for arm pain, NDI Neck disability index, SD Standard deviation, NS Non-significant, S Significant, HS Highly significant

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