Table 1 Demographic data of the 124 patients

Age (years of age)

14.2 ± 2.8

Sex

 Male(N)

44

 Female(N)

80

Height (cm)

160.2 ± 12.6

Weight (kg)

48.1 ± 12.6

BMI (kg/m²)

18.6 ± 3.9

Follow-up period (mon)

37.3 ± 12.9

VAS-lower extremities

0 ± 0.1

VAS-lumbar

0.7 ± 1.46

Oswestry-Disability-Index

1.3 ± 3.0

Hospital stay(d)

17.2 ± 23.0

Surgery duration (min)

321.4 ± 133.3

Total blood loss (ml)

792.9 ± 594.2

  ≥ 1(N)

42

 0(N)

82

  ≥ 1(N)

4

 0(N)

120

Median upper instrumented level

T3

Median lower instrumented level

L1

Median fused levels

10.5