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Table 1 Background data of study patients

From: Clinical evaluation of S1 alar screws application in short-segment lumbosacral fixation and fusion for spine infection with severe S1 vertebral body loss

Case No

Age (yr.)

Sex

Medical Problems

Symptoms

BMD

Fusion Levels

Follow Up Time (m)

1

63

F

Chronic Pyogenic Spondylitis

Back pain and leg pain

2.3

L4/L5L5/S1

19

2

52

F

Postoperative Pyogenic Spondylitis

Back pain

2.4

L5/S1

15

3

78

F

Tuberculotic Spondylitis

Back pain and leg pain

1.8

L5/S1

18

4

61

M

Postoperative Pyogenic Spondylitis

Back pain

2.1

L5/S1

12

5

57

M

Chronic Pyogenic Spondylitis

Back pain

1.6

L5/S1

12

6

69

F

Postoperative Pyogenic Spondylitis

Back pain

1.9

L5/S1

15

7

65

M

Chronic Pyogenic Spondylitis

Back pain and leg pain

2.2

L5/S1

15

  1. Yr. year, F female, M male, m months