Table 8.

Comparison of CK levels between 3ACDF group and 1ACCF with 1ACDF group.

Variable	Group	Number of patients	Mean ± standard deviation	Median	Min	Max	t value	P value
Preoperative CK	3ACDF	8	64.38 ± 33.78	58.5	33	120	0.326	.747
	1ACCF with 1ACDF	20	69.05 ± 34.44	74	18	130
CK value at POD1	3ACDF	8	172.5 ± 80.8	159.5	85	286	−1.083	.289
	1ACCF with 1ACDF	20	142.2 ± 60.96	131.5	71	242
CK change at POD1	3ACDF	8	108.13 ± 50.44	103	48	191	−1.742	.093
	1ACCF with 1ACDF	20	73.15 ± 47.06	66	9	139

ACCF = anterior cervical corpectomy fusion, ACDF = anterior cervical discectomy fusion, CK = creatine kinase, POD = postoperative day.