Massively prolapsed intervertebral disc herniation with interlaminar endoscopic spine system Delta endoscope: A case series

Table 1 Visual analog scale and oswestry disability index scores before and at 1 d, 3 mo, and 6 mo after surgery

Variables	Before	1 d after	3 mo after	6 mo after	P value
VAS for back pain	34.4 ± 8.5	10.3 ± 5.3	7.7 ± 1.2	5.5 ± 1.9	< 0.01
VAS for leg pain	68.0 ± 7.3	7.6 ± 3.1	3.5 ± 1.9	2.5 ± 1.7	< 0.01
ODI	60.2 ± 7.3	22.3 ± 3.4	18.8 ± 0.2	17.9 ± 3.4	< 0.01

ODI: Oswestry disability index; VAS: Visual analog scale.