Table 1 Comparisons of basic characteristics of patients between K-rod group and PLIF

Gender (male/female)

21/6

13/12

0.051

Follow-up (month,⁻x ± s

16 ± 6

17 ± 5

0.000^***

Operation time (min,⁻x ± s

144.7 ± 41.0

222.9 ± 86.1

0.000^***

Blood loss (ml,⁻x ± s)

81.1 ± 48.5

294.0 ± 156.3

0.000^***

Drainage (ml,⁻x ± s)

88.3 ± 44.1

212.9 ± 177.6

0.002^**

Exercise time turning to the ground(d,⁻x ± s)

2.2 ± 0.5

5.2 ± 1.0

0.000^**

Hospital stay time(d,⁻x ± s)

10.5 ± 2.7

15.0 ± 10.1

0.015^*