Table 7.

Comparison of VAS and ODI scores between patients with Lee zone III type before and after operation (n = 56)

	Number	Preoperative ODI (%)	Preoperative VAS (points)	Post-operative ODI (%)	Post-operative VAS (points)
ELLD	49	71.43 ± 5.08	6.12 ± 0.72	7.76 ± 2.22	1.80 ± 0.70
EPLD	7	72.29 ± 5.58	6.29 ± 0.48	4.86 ± 1.06	1.86 ± 0.69
t		0.413	0.575	3.375	0.215
P		0.682	0.568	0.001	0.831