Surgical Reduction and Direct Repair Using Pedicle Screw-Rod-Hook Fixation in Adult Patients with Low-Grade Isthmic Spondylolisthesis

Table 1

General data (mean ± SD/M ± IQR).

	Direct repair (n = 64)/mean ± SD
Age in years (range)	36.50 ± 21.00 (15–51)
Gender, n (%)
Male	36 (56.25)
Female	28 (43.75)
Follow-up in months (range)	52.15 ± 9.96 (32–76)
Leg pain, n (%)	14 (21.88)
Level treated, n (%)
L5	51 (79.69)
L4	13 (20.31)
Operation time (range) (min)	187.00 ± 71.00 (120–347)
Blood loss (range) (ml)	65.00 ± 31.00 (30–180)

n, number of patients; SD, standard deviation; M, median; IQR, interquartile range. Note. Values in the age, operation time, and blood loss data represent M ± IQR, and follow-up time represents mean ± SD.