Posterior Transpedicular Dynamic Stabilization versus Total Disc Replacement in the Treatment of Lumbar Painful Degenerative Disc Disease: A Comparison of Clinical Results

Table 2

(a) The comparison of VAS scores. (b) The comparison of decrease % in follow-up VAS data.

(a)  

VAS		TDR (𝑛=25)	PTDS (𝑛=25)	^a𝑃
Preop VAS	Min–Max	6–10	6–9	0.219
	Mean ± SD	8.24±1.09 [8]	7.96±0.79 [8]
VAS (3 months)	Min–Max	0–5	1–5	0.588
	Mean ± SD	2.44±1.16 [2]^‡	2.64±0.91 [2]^‡
VAS (12 months)	Min–Max	0–3	0–4	0.087
	Mean ± SD	1.68±0.85 [2]^‡	1.28±0.94 [1]^‡
VAS (24 months)	Min–Max	0–2	0–3	0.240
	Mean ± SD	0.84±0.69 [1]^‡	0.68±0.85 [1]^‡
	^b𝑃	0.001**	0.001**

^aMann-Whitney 𝑈 test, ^bFriedman test.
^‡Wilcoxon signed-rank test 𝑃<0.001.
^∗∗𝑃<0.01.

(b)  

VAS (decrease %)	TDR (𝑛=25)	PTDS (𝑛=25)	𝑃
	Mean ± SD	Mean ± SD
Preop * VAS (3 months)	70.18±14.14	66.18±13.57	0.374
Preop * VAS (12 months)	79.91±10.00	83.71±12.08	0.214
Preop * VAS (24 months)	89.86±8.41	91.30±10.78	0.519

Mann-Whitney 𝑈 test.