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Table 1 Parameters for finite element analysis

From: Patient-specific three-dimensional evaluation of interface micromotion in two different short stem designs in cementless total hip arthroplasty: a finite element analysis

 

Femur

Rectangular stem

Finned stem

Artificial head

Young's modulus (MPa)

10 + 6850ρ1.49

109 × 103

109 × 103

109 × 103

Poisson’s ratio

0.4

0.28

0.28

0.28

Friction coefficient

0.64, 0.49*

0.49

  1. ρ(g/cm3) = (0.945 HU + 1.35) × 1.0−3 (HU > − 1), ρ(g/cm3) = 0 (HU  − 1)
  2. ρ: Bone mineral density, HU: CT value
  3. *The proximal and distal coated portions of the rectangular stem, respectively