Table 2 Static torsion testing

1

1.85

20.77

25.57

2

1.77

18.62

24.83

3

1.95

20.71

25.92

4

1.89

19.75

25.55

5

1.94

19.11

25.56

Mean:

1.85

19.78

25.49

SD:

0.074

0.955

0.397

Memory Metal Spinal System

Specimen

Torsional stiffness (Nm/deg.)

2% yield torque (Nm)

Peak torque (Nm)

1

2.38

61.28

74.16

2

2.59

61.66

76.46

3

2.53

65.53

76.17

4

2.63

65.14

77.81

5

2.48

66.07

77.74

Mean:

2.52

63.94

76.47

SD:

0.098

2.280

1.487