Table 4 Comparison between the neurological status of patients suffered by ankylosing spondylitis before and after the operation due to spinal injury, using the Frankel neurological classification.

Preoperatively

A

N

3

-

-

%

15%

0%

0%

B

N

-

2

-

%

0%

10%

0%

C

N

-

2

2

%

0%

10%

10%

D

N

-

-

1

%

0%

0%

5%

E

N

-

-

10

%

0%

0%

50%

Wilcoxon Signed Ranks Test: p = 0,015