Cement augmentation of the proximal femoral nail antirotation for the treatment of two intertrochanteric fractures - a comparative finite element study

Table 3 Material contents of femoral, PFNA and bone cement

	Trabecular	Cortical	PFNA [24]	Bone cement [24]
Apparent density(ρ_app), g/cm³	0.433	1.525	4.5	1.18
Elastic Modulus(E), Gpa	0.406	8.318	120	220
yield stress (σ), Mpa	2.107	85.751	1086	100
Poisson’s ratio (v)	0.3	0.3	0.31	0.20
Hardening parameter (β)^a	0.1 [25]		0.1 [26]	NR^c
C^b	2.5 [25]		80,000 [27]	NR
P^b	7 [25]		1.1 [27]	NR
Failure strain (%)	0.7 [21]	0.9 [28]	22 [29]	1.3 [30]

ISSN: 1471-2474