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Table 4 Effect of lumbar 5 spondylolisthesis on the distance between BPSs and ALVs

From: The study of distance changes between lumbar bi-cortical pedicle screws and anterior large vessels in patients with lumbar spondylolisthesis

Group

L5

S1

10

15

0

5

10

N

<

N

<

N

<

N

<

N

<

Left

C

8 (7.5%)

18 (16.8%)

81 (75.7%)

5 (4.7%)

4 (3.7%)

98 (91.6%)

21 (19.6%)

62 (57.9%)

24 (22.4%)

18 (16.8%)

11 (10.3%)

78 (72.9%)

40 (37.4%)

11 (10.3%)

56 (52.3%)

S

10 (19.2%)

16 (30.8%)

26 (50%)

9 (17.3%)

9 (17.3%)

34 (65.4%)

11 (21.2%)

31 (59.6%)

10 (19.2%)

10 (19.2%)

6 (11.5%)

36 (69.2%)

21 (40.4%)

5 (9.6%)

26 (50%)

P

 

0.004

  

0.000

  

0.894

  

0.89

  

0.935

 

Right

C

11 (10.3%)

17 (15.9%)

79 (73.8%)

15 (14%)

4 (3.7%)

88 (82.2%)

20 (18.7%)

65 (60.7%)

22 (20.6%)

29 (27.1%)

46 (43%)

32 (29.9%)

87 (81.3%)

1 (0.9%)

19 (17.8%)

S

12 (23.1%)

16 (30.8%)

24 (46.2%)

17 (32.7%)

8 (15.4%)

27 (51.9%)

11 (21.2%)

30 (57.7%)

11 (21.2%)

14 (26.9%)

24 (46.2%)

14 (26.9%)

41 (78.8%)

0

11 (21.2%)

P

 

0.003

  

0.000

  

0.919

  

0.91

  

0.777

 
  1. Note: C Control group, S Spondylolisthesis group; N, ≥ and < represented non-contact, distant and close ALV respectively