Table 1 Demographic characteristics and operative details

 M

9

 F

10

Age (yr) ^a

29.7 ± 6.0 (17–38)

 Persistent back pain

8

 Neurological deficit

10

 Respiratory dysfunction

7

Number of bodies involved^a

4.6 ± 1.1(3–7)

 Thoracic (T1–T10)

12

 Thoracolumbar (T11–L2)

4

 Lumbar (L3–L5)

3

Period of traction (weeks) ^a

10.4 ± 1.9 (8–14)

The blood loss (ml) ^{a, b}

558 ± 171 (300–850)

Operative time (min) ^{a, b}

251 ± 52 (180–402)

 PSO

4

 PVCR

0

Period of follow-up (months) ^a

26.5 ± 7.0 (20–42)