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Table 3 Measurement data

From: 3D printing–assisted preoperative plan of pedicle screw placement for middle-upper thoracic trauma: a cohort study

Segment

T1

T2

T3

T4

T5

Case

α

β

ɸ

L

α

β

ɸ

L

α

β

ɸ

L

α

β

ɸ

L

α

β

ɸ

L

1

        

19.5

10

3.5

30

16.5

10

3.5

30

    

2

        

23.5

18

3.5

30

21

16

3.5

30

17.5

13

4

30

3

33

14

3.5

30

30.5

13

3.5

30

24.5

11

3.5

30

19

11

3.5

30

    

4

    

28

13

3.5

30

22.5

13

3.5

30

17.5

11

4

30

15

11

4.5

30

5

        

20.5

16

3.5

30

16

15

3.5

30

    

6

                

11.5

15

4.5

30

7

                

15.5

16

4

30

Segment

T6

T7

T8

T9

T10

Case

α

β

ɸ

L

α

β

ɸ

L

α

β

ɸ

L

α

β

ɸ

L

α

β

ɸ

L

1

13

6

4.5

35

11

4

4.5

35

            

2

15

11

4.5

35

                

3

                    

4

                    

5

11

6

4.5

35

10

5

4.5

35

            

6

10

13

4.5

35

        

6.5

10

5

40

5

7

5.5

40

7

15

15

4.5

35

    

11

12

5

40

10.5

11

5

40

    
  1. α, the measured inclined angle of the pedicle screw (in degree); β, the measured head-tilting angle of the pedicle screw (in degree); ɸ, the optimal diameter of the pedicle screw based on the 3D printing model (in mm); L, the optimal length of the pedicle screw based on the 3D printing model (in mm)
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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