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Table 2 Rotation angles*, obtained with FEM and with the analytical model.

From: Assessment of the primary rotational stability of uncemented hip stems using an analytical model: Comparison with finite element analyses

 

Moment [Nm]

RotaMIN

RotaLOW

RotaMED

RotaHIGH

RotaMAX

FEM

4

5,03E-03

5,88E-03

1,71E-03

2,82E-03

1,23E-03

 

10

1,39E-02

1,77E-02

7,11E-03

6,45E-03

4,47E-03

 

20

2,93E-02

3,26E-02

1,38E-02

1,20E-02

8,76E-03

Analytical model

4

1,18E-05

8,58E-06

5,12E-06

4,05E-06

3,20E-06

 

10

2,94E-05

2,15E-05

1,28E-05

1,01E-05

8,00E-06

 

20

5,88E-05

4,29E-05

2,56E-05

2,03E-05

1,60E-05

  1. *Angles expressed in radians, for all five stems, under torsional loads of 4 Nm, 10 Nm and 20 Nm.