Table 2 Articular cartilage stress values of L1/L2 and L5/S1 after internal fixation (MPa)

From: Finite element analysis of pedicle screw fixation biomechanics and adjacent segment degeneration in varied bone conditions

  

L1/L2

L5/S1

  

FLEX

EXT

LB

RB

LR

RR

FLEX

EXT

LB

RB

LR

RR

 

Intact Model

0.41

0.12

0.22

0.25

0.25

0.24

1.03

0.4

0.41

0.52

0.51

0.62

Group 1

Model A

1.75

3.04

0.94

0.99

3.61

3.59

1.91

2.31

2.39

2.37

1.89

2.01

 

Model B

1.44

1.79

0.86

0.79

2.81

2.84

1.35

1.64

2

1.89

1.61

1.74

 

Model C

1.44

1.8

0.82

0.78

2.82

2.77

1.37

1.58

1.98

1.9

1.63

1.82

Group 2

Model D

1.83

3.32

1.09

1.04

3.68

4.15

1.92

2.28

2.34

2.37

1.79

2.12

 

Model E

1.63

1.87

0.96

0.89

2.9

2.88

1.35

1.64

1.89

1.89

1.61

1.74

 

Model F

1.58

1.88

0.99

0.83

2.88

2.86

1.34

1.58

1.95

1.92

1.63

1.72

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