Table 1 Basic clinical data of patients

Gender (male/female)

75/43

Age (years)

32.0 ± 9.9

Lesion location

 T_1 − 4

24(20.3 %)

 T_5 − 9

42(35.6 %)

 T_{10 − 12}

52(44.1 %)

Number of affected FSUs

 single

79(66.9 %)

 double

25(21.2 %)

 Multiple

14(11.9 %)

 Duration for back pain

8.1 ± 5.3

 Paraparesis or paraplegia duration (days)

6.3 ± 4.9

 Operation time (min)

194.2 ± 48.2

 Blood loss

871.2 ± 161.2

 Rate of perioperative complication

7 (5.9 %)

 Mean duration of bone graft fusion

8.6 ± 1.3