Table 2 Characteristics in patients with ankylosing spondylitis according to the spinal cord injury with or without fracture

Male

100 (95.2)

10 (90.9)

42 (93.3)

48 (98.0)

Age (year)

56.2 ± 12.3

55.9 ± 6.2

55.9 ± 15.3

56.6 ± 10.2

Low-energy trauma

53 (50.5)

6 (54.5)

24 (53.3)

23 (46.9)

Subluxation or dislocation

33 (31.4)

1 (9.1)^a

4 (8.9)^a

28 (57.1)

Location of spinal fractures

 None

11 (10.5)

11 (100.0)^a

0 (0.0)^b

0 (0.0)

 C0-2

5 (4.8)

0 (0.0)

4 (8.9)

1 (2.0)

 C3-7

37 (35.2)

0 (0.0)^a

5 (11.1)^a

32 (65.3)

 T

28 (26.7)

0 (0.0)

20 (44.4)^ab

8 (16.3)

 L

15 (14.3)

0 (0.0)

14 (31.1)^ab

1 (2.0)

 Multiple regions involved

9 (8.6)

0 (0.0)

2 (4.4)

7 (14.3)

Spinal fracture classification

 None

11 (10.5)

11 (100.0)^a

0 (0.0)^b

0 (0.0)

 A01-A4

13 (12.4)

0 (0.0)

11 (24.4)^a

2 (4.1)

 B1-B3

42 (40.0)

0 (0.0)^a

18 (40.0)^b

24 (49.0)

 C

36 (34.3)

0 (0.0)^a

13 (28.9)^b

23 (46.9)

 Others

3 (2.9)

0 (0.0)

3 (6.7)

0 (0.0)

Location of SEH

 None

91 (86.7)

11 (100.0)

44 (97.8)^a

36 (73.5)

 C

8 (7.6)

0 (0.0)

0 (0.0)^a

8 (16.3)

 C-T

4 (3.8)

0 (0.0)

0 (0.0)

4 (8.2)

 L, T-L

2 (1.9)

0 (0.0)

1 (2.2)

1 (2.0)

 Bamboo spine

78 (74.3)

4 (36.4)^a

31 (68.9)^ab

43 (87.8)

 Delayed diagnosis

33 (31.4)

0 (0.0)

21 (46.7)^ab

12 (24.5)

Delayed diagnosis type (n = 33)

 Doctor

6 (18.2)

0 (0.0)

4 (19.0)

2 (16.7)

 Patient

27 (81.8)

0 (0.0)

17 (81.0)

10 (83.3)

 Delayed diagnosis days (n = 33)

19.8 ± 20.4

-

26.0 ± 22.5

9.1 ± 9.2

 SEH

14 (13.3)

0 (0.0)

1 (2.2)^a

13 (26.5)

 Complication

32 (30.5)

1 (9.1)^a

6 (13.3)^a

25 (51.0)

 Complication, infection

24 (22.9)

1 (9.1)^a

3 (6.7)^a

20 (40.8)