Minimum Two-Year Follow-Up of Cases with Recurrent Disc Herniation Treated with Microdiscectomy and Posterior Dynamic Transpedicular Stabilisation

Table 1: The Evaluation of Oswestry Disability Index and VAS Measurements

	Oswestry⁺	VAS⁺⁺
	Means ± SD	Means ± SD
Pre-op	67,30 ± 9,04	7,22 ± 0,89 (7)
Post-op mo 3	26,35 ± 9,26	3,0 ± 1,28 (3)
Post-op mo 12	12,40 ± 6,50	1,47 ± 0,93 (2)
Post-op mo 24	7,70 ± 3,55	0,97 ± 0,73 (1)
P-values	0,001^**	0,001^**
Post-hoc	Pre-op > Post-op mo 3 (0,001^) Pre-op > Post-op mo 12 (0,001^) Pre-op > Post-op mo 24(0,001^**)	Pre-op > Post-op mo 3 (0,001^) Pre-op > Post-op mo 12 (0,001^) Pre-op > Post-op mo 24(0,001^**)

⁺ Repeated measures test; Post-hoc Bonferroni test was used.

⁺⁺ Friedman test; Post-hoc Wilcoxon signed-rank test was used.

SD: Standard deviation; p: Significance level

^** p < 0,01.