Table 2.

T2 value, disc volume of cervical disc and endplate region (mean ± SD). Differences were assessed using ANOVA

Group	Pre-op	2wks	6wks	P-value
T2 value-disc (ms)
Blank	61.32 ± 8.35	60.55 ± 7.30	59.33 ± 3.51	0.910
Control	62.55 ± 10.30	58.33 ± 5.61	55.38 ± 6.23	1.012
Puncture	61.82 ± 9.85	48.31 ± 6.35	38.56 ± 5.35	0.04*
P.acnes	61.45 ± 8.95	50.31 ± 5.65	36.56 ± 5.35	0.02*
S. epidermidis	61.76 ± 5.35	65.25 ± 5.82	30.55 ± 4.58	0.005**
P-value	0.675	0.05*	0.008**
T2 value-end plate (ms)
Blank	56.34 ± 7.48	55.45 ± 6.34	52.54 ± 4.65	0.496
Control	55.34 ± 8.54	51.63 ± 3.25	48.28 ± 5.35	0.245
Puncture	52.74 ± 4.35	45.51 ± 2.38	31.57 ± 3.37	0.043*
P.acnes	54.31 ± 5.25	44.28 ± 4.25	29.28 ± 2.53	0.025*
S. epidermidis	53.56 ± 4.58	55.25 ± 5.54	23.36 ± 3.65	0.001**
P-value	0.876	0.03*	0.001**
Disc volume((mm3)
Blank	5.12 ± 0.41	4.80 ± 1.38	4.50 ± 0.38	0.127
Control	4.92 ± 0.53	4.50 ± 2.30	3.95 ± 2.52	0.145
Puncture	5.23 ± 0.85	3.5 ± 2.42	2.1 ± 1.72	0.042*
P.acnes	5.51 ± 0.67	2.3 ± 0.81	1.8 ± 0.79	0.039*
S. epidermidis	5.31 ± 0.57	1.8 ± 0.87	0.50 ± 0.11	0.007**
P-value	0.236	0.045*	0.006**

*means P value<0.05, ** means P value<0.01.