In Silico Pelvis and Sacroiliac Joint Motion: Refining a Model of the Human Osteoligamentous Pelvis for Assessing Physiological Load Deformation Using an Inverted Validation Approach

Table 2

Assigned material properties for linear elastic and viscoelastic models, obtained from literature [29–36].

Material properties	Linear elastic	Viscoelastic
Bone
Elastic modulus	11 x 10^3 MPa	13 x 10^3 MPa
Variation elastic modulus	6 - 22 x 10^3 MPa	10 - 16 x 10^3 MPa
Poisson ratio	0.26	0.26
Variation poisson ratio	0.20 - 0.32	0.20 - 0.32
Bulk modulus		9.03 x 10^3 MPa
Shear modulus		5.16 x 10^3 MPa
Prony volumetric relaxation
Relative modulus		0.713
Relaxation time		6.9 sec
Density		1640 kg/m^3
Cartilage
Elastic modulus	4.5 MPa	4.5 MPa
Variation elastic modulus		1 - 8
Poisson ratio	0.20	0.21
Bulk modulus		2.59 x 10^3 Pa
Shear modulus		1.86 x 10^3 Pa
Prony volumetric relaxation
Relative modulus		0.713
Relaxation time		6.9 sec
Variation	0.14 - 0.26	0.12 - 0.30
Ligament
Elastic modulus	350 MPa	350 MPa
Variation	100 – 800 MPa	100 - 800 MPa