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Table 1 Analyzed variables with percentages

From: Vacuum phenomenon as a predictor of kyphosis after implant removal following posterior pedicle screw fixation without fusion for thoracolumbar burst fracture: a single-center retrospective study

 

All (n = 59)

Percentage

Age

38 (17–68)

 

Male sex

30

50.8

Level

 T 11 / 12

4 / 8

6.8 / 13.6

 L 1 / 2 / 3

26 / 14 / 7

44.1 / 23.7 / 11.9

Classification

 A 1 / 2 / 3

4 / 4 / 26

6.8 / 6.8 / 44.1

 B 1 / 2 / 3

3 / 11 / 1

5.1 / 18.6 / 2.7

 C 1 / 2 / 3

6 / 2 / 2

10.2 / 3.4 / 3.4

Initial severe kyphosis

9

15.0

Wedge deformity

13

21.7

Instrumentation

 1 above - 1 below

10

16.7

 2 above - 1 below

42

70.0

 2 above - 2 below

7

11.9

Vertebroplasty

35

59.3

Laminectomy

6

10.2

Vacuum phenomenon

29

49.2