Comparison of Incidences of Intravascular Injection between Medial and Lateral Side Approaches during Traditional S1 Transforaminal Epidural Steroid Injection

Table 1

Results for characteristics of patients and baseline clinical variables.

	Group M ()	Group L ()	value
Female	40 (48.8%)	49 (59%)	0.186
Age, years	63.63 ± 11.67	62.07 ± 15.69	0.470
BMI, kg/m^2	24.32 ± 2.57	23.93 ± 2.39	0.317
Side
Right	41 (50%)	35 (42.2%)	0.313
Left	41 (50%)	48 (57.8%)	0.313
Diagnosis
Spinal stenosis	49 (59.8%)	44 (53.0%)	0.382
HLD	15 (18.3%)	22 (26.5%)	0.206
FBSS	5 (6.1%)	10 (10.8%)	0.274
Spinal stenosis and HLD	11 (13.4%)	7 (8.4%)	0.305
Previous surgery	16 (19.5%)	17 (20.5%)	0.876

Values are expressed as the mean ± standard deviation or number of patients (%). Group M, medial approach group; Group L, lateral approach group; HLD, herniated lumbar disc L5-S1; FBSS, failed back surgery syndrome.