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
Poisson’s ratio
0.4
0.28
Friction coefficient
–
0.64, 0.49*
0.49