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Table 1 Patient demographic data for the TESSYS and ZESSYS groups

From: Application of a targeted and quantificational foraminoplasty device in percutaneous transforaminal endoscopic discectomy for L5–S1 disc herniation: preliminary clinical outcomes

  TESSYS ZESSYS p value
Age, years 52.54 ± 9.10 49.21 ± 10.38 0.208
Sex, male:female 18:10 15:13 0.415
ASA criteria, I:II 20:8 18:10 0.571
BMI (kg/m2) 22.28 ± 2.69 21.99 ± 2.22 0.659
Smoker, yes:no 16:12 17:11 0.786
Duration of symptoms, weeks 15.21 ± 2.54 16.04 ± 2.96 0.271
Herniation type, contained:uncontained 9:19 11:17 0.577
Foraminal stenosis grade (L5–S1) 0:1:2:3 19:9:0:0 17:10:1:0 0.523
Iliac height grade
1:2:3:4:5:6
0:0:3:8:10:7 0:0:1:9:11:7 0.730
  1. ASA American Society of Anesthesiologists, BMI body mass index