Table 4 Changes of JOA score before and after surgery

33

9.94 ± 2.34

77

10.13 ± 2.42

110

10.07 ± 2.39

0.683

33

12.73 ± 2.45 ^a

77

12.91 ± 2.46 ^b

110

12.85 ± 2.45 ^c

0.687

33

15.12 ± 1.63 ^a

77

14.47 ± 1.93 ^b

110

14.66 ± 1.86 ^c

0.571

9

15.56 ± 0.88 ^a

18

15.39 ± 1.09 ^b

27

15.44 ± 1.01 ^c

0.712

16

14.88 ± 2.16 ^a

32

15.28 ± 1.25 ^b

48

15.15 ± 1.6 ^c

0.497

6

15.17 ± 0.75 ^a

8

14 ± 2.51 ^b

14

14.5 ± 1.99 ^c

0.081