Minimally invasive treatment of far lateral lumbar disc herniation: Selective nerve root block with percutaneous transforaminal endoscopic discectomy

Table 1 Baseline clinical characteristics and demographic data of 30 patients, n (%)

FLLDH type	I	II	III	P value
No. of patients	12	13	5
Age, years	50.167 ± 16.503	49.308 ± 13.493	59.60 ± 9.182	0.3788
Male sex	5 (41.67)	9 (69.23)	3 (60)	0.3757
BMI	22.952 ± 1.496	24.512 ± 2.953	25.504 ± 2.222	0.1014
Preoperative course	7.583 ± 5.230	6.0 ± 5.0	5.8 ± 4.147	0.679
Surgical segment				0.2
L3/4	2	4	3
L4/5	6	7	0
L5/S1	4	2	2
Responsible nerve root				0.5718
L3	2	4	3
L4	7	7	2
L5	4	2	3
S1	1	0	0
ODI	48.148 ± 11.383	42.073 ± 10.281	57.780 ± 15.072	0.1141
VAS-leg	6.417 ± 1.782	6.692 ± 1.437	7.20 ± 1.924	0.6773
VAS-back	4.083 ± 1.676	3.154 ± 1.405	2.60 ± 1.140	0.1351

FLLDH: Far lateral lumbar disc herniation; BMI: Body mass index; ODI: Oswestry disability index; VAS: Visual analogue scale.