Research Article

Lumbosacral Transitional Vertebrae in Adolescents: Effects on the Short-Term Outcomes of Percutaneous Endoscopic Lumbar Discectomy

Table 3

Clinical outcome evaluation.

VariableGroup A ()Group B () value

NRS, lower back pain
 Preoperative4.0 (3.0 ~ 4.0)3.0 (3.0 ~ 4.0)0.081
 18 months postop0.5 (0.0 ~ 2.0)0.0 (0.0 ~ 2.0)0.764
NRS, leg pain
 Preoperative5.0 (5.0 ~ 6.0)6.0 (5.0 ~ 6.0)0.156
 18 months postop0.0 (0.0 ~ 0.0)0.0 (0.0 ~ 0.0)0.213
ODI
 Preoperative34.2 (28.4 ~ 39.6)34.2 (28.8 ~ 37.8)0.874
 18 months postop7.2 (3.6 ~ 16.2)12.6 (5.9 ~ 16.2)0.117
MacNab grading system, (%)1.000+
 Excellent/good12/8 (90.9)22/19 (93.2)
 Fair/poor0/2 (9.1)0/3 (6.8)
Additional lumbar surgery, (%)2 (9.1)3 (6.8)1.000+
 Recurrence11
 A new lumbar disc herniation12
Postoperative pain occurred, (%)0.541+
 Hip pain02 (4.5)
 LBP8 (36.4)13 (29.5)
 Leg pain00
 Pain in back and leg4 (18.2)6 (13.6)

Values are presented as Md (), or number (%). NRS: numerical rating scale; ODI: Oswestry Disability Index. Mann–Whitney test. +Pearson’s chi-square test or Fisher’s exact test.