Skip to main content

Table 4 The comparison of the ROM between our FE model and the previous in vitro experimental study

From: Biomechanical evaluation of three surgical scenarios of posterior lumbar interbody fusion by finite element analysis

Segment

Moment (Nm)

Extension and flexion

Left and right lateral bending

Left and right torsion

  

In vitro

FEA

In vitro

FEA

In vitro

FEA

 

2.5

7.5(1.35)

6.64

6.5 (1.4)

6.9

2.7(1.3)

3.62

L1-L2

5

8.3(1.3)

8.69

7.6 (1.35)

8.5

2.6(1.5)

3.04

 

7.5

9.2(1.25)

8.93

8.9(1.2)

9.32

3.9(1.1)

3.47

 

10

10.4(1.45)

10.2

9

10.2(1.5)

9.78

4(1.7)

4.02

 

2.5

6.5(1.25)

7.62

8.8(1.2)

9.23

2.7(0.9)

3.24

L2-L3

5

10.1(1.2)

9.06

10.7(1.3)

11.2

3.15(1)

3.78

 

7.5

11.1(1.2)

10.94

12(1.55)

13

3.9(0.85)

4.47

 

10

11.5(1.3)

10.29

13(1.15)

13.43

5(0.95)

5.48

 

2.5

8.3(1.75)

7.65

8.3(1.85)

8.43

2.5(1.1)

3.51

L3-L4

5

10.5(2.2)

8.93

10.5(2.15)

9.5

3.7(1.05)

4.27

 

7.5

9.9(1.6)

10.24

11.4(1.5)

11.9

4.7(1.15)

4.79

 

10

11.3(1.7)

1.78

12.2(1.7)

13.2

5.1(1.38)

5.76

 

2.5

10(1.3)

11.25

7.5(1.45)

8.21

1.8(1.02)

2.57

L4-L5

5

12.5(2.25)

12.95

10.2(2.25)

10

2.4(0.85)

3.27

 

7.5

14(2)

14.6

11.1(2.1)

10

2.8(1.2)

3.94

 

10

14.8(2.1)

14.2

12.2(2.25)

13.23

3.7(1.5)

4.23

 

2.5

13.5(3.3)

13.68

7.7(2.3)

8.2

1.5(0.55)

2.09

L5-S1

5

15.1(1.95)

16.17

9.3(2.15)

8.3

1.8(0.75)

2.35

 

7.5

16.4(2)

17.66

10.2(2.2)

11

2(0.65)

2.48

 

10

16.9(2.05)

17.29

11.3(2.35)

12.56

2.5(0.75)

2.7

  1. (The ROM of each segment was determined by taking the sum of the two motions. The numbers in the brackets were the standard deviations.)