Transforaminal endoscopic lumbar discectomy with two-segment foraminoplasty for the treatment of very highly migrated lumbar disc herniation: a retrospective analysis

Table 2 Comparison of VAS and ODI scores at each follow-up and pre-operation (N = 33)

	Preoperative	1-week	3-month	6-months	1-year	The last follow-up	P¹	P²	P³
VAS¹	7.68 ± 0.88	2.11 ± 0.97	1.34 ± 0.51	0.89 ± 0.24	0.65 ± 1.57	0.51 ± 0.23	P < 0.0001	P < 0.0001	P < 0.0001
VAS²	3.76 ± 1.40	1.87 ± 0.95	0.96 ± 0.63	0.43 ± 0.28	0.55 ± 0.92	0.23 ± 0.10	P < 0.0001	P < 0.0001	P < 0.0001
ODI	59.25 ± 10.82	35.85 ± 6.14	25.62 ± 7.04	14.62 ± 7.65	13.92 ± 5.36	12.29 ± 3.96	P < 0.0001	P < 0.0001	P < 0.0001

Pre-op: preoperation; VAS¹ indicates the leg pain score, VAS² indicates the lower back pain score; P¹: comparison between the values at preoperative follow-up and the values at the 1-week follow-up; P²: comparison between the values at the 1-week follow-up and the values at the 1-year follow-up; P³: comparison between the values at the 1-week follow-up and the values at the last follow-up

ISSN: 1471-2482