Table 2 Demographic and clinicopathological data of group A, group B and group C.

From: Application of 3-dimensional printing guide template and pointed lotus-style regulator in percutaneous pedicle screw fixation for thoracolumbar fractures

Patient characteristics

Group A

Group B

Group C

Statistic

p-value

Age(yrs)

53.0 ± 2.5

51.6 ± 2.7

52.0 ± 2.9

F = 0.545

0.588

Gender(n)

   

χ2 = 0.623a

0.733

Male

9

10

12

  

Female

11

10

8

  

Weight(kg)

69.0 ± 5.1

69.1 ± 6.5

71.4 ± 4.5

F = 0.364

0.699

Degree of vertebral compression(%)

43.8 ± 7.5

43.9 ± 5.8

44.4 ± 6.0

F = 0.023

0.978

Preoperative KA(°)

26.8 ± 4.4

28.3 ± 3.4

29.7 ± 3.1

F = 1.275

0.300

Preoperative VAS scores

7.9 ± 1.3

7.6 ± 1.1

8.0 ± 1.5

F = 0.176

0.840

Preoperative ODI scores

87.5 ± 1.8

88.8 ± 2.1

87.3 ± 1.5

F = 1.572

0.231

Level of injured vertebra(n)

   

χ2 = 3.247

0.197

T11

1

1

2

  

T12

3

2

3

  

L1

8

11

9

  

L2

8

6

6

  

Width of pedicle (mm)

T11

5.6 ± 1.4

5.8 ± 1.8

5.5 ± 1.2

F = 1.038

0.575

T12

6.4 ± 1.6

6.1 ± 1.1

6.3 ± 1.3

F = 1.990

0.313

L1

4.6 ± 0.6

4.6 ± 0.8

4.8 ± 0.7

F = 0.667

0.745

L2

5.4 ± 0.7

5.5 ± 0.7

5.3 ± 1.1

F = 0.062

0.941

AO spine classification (n)

   

χ2 = 1.558a

0.459

A1.2

15

16

18

  

A1.3

5

4

2