A finite element model of the shoulder: application to the changes of biomechanical environment induced by postoperative malrotation of humeral shaft fracture

Table 1 Description of constitutive laws used in the model. (I₁ is the first invariant of the Cauchy–Green tensor)

	Humerus	Humeral head cartilage	Scapula	Glenoid cartilage	Cancellus
Material Behaviour	Linear elastic, Homogeneous	Neo-Hookean Hyperelastic	Linear elastic, Homogeneous	Neo-Hookean Hyperelastic	Linear elastic, Homogeneous
Mathematical expression		W = C₁₀(I₁-3)		W = C₁₀(I₁-3)
Constant	E0 = 13.4GPa υ0 = 0.3	C₁₀ = 1.79	E0 = 9.0GPa υ0 = 0.3	C₁₀ = 1.79	E0 = 2.0GPa υ0 = 0.2

ISSN: 1471-2474