Finite element modelling of the vibrational behaviour of the human femur using CT-based individualized geometrical and material properties.
Frequency analysis of long bones has been investigated as a tool to assess bone quality or integrity. The objective of the present paper was to develop a three-dimensional finite element model of a fresh human femur with geometrical and mechanical properties derived from quantitative computer tomography images. This model was then exercised and the results were compared to those obtained from a vibration analysis technique. The percent relative error between the numerically and experimentally derived results was found about 4%. Finally, the influence of mechanical properties on the resonant spectre was studied. The results exhibit the limitations of the vibrational technique to detect slight material changes.
INSERM U305, Biomécanique, Centre Hospitalier Hôtel Dieu, Toulouse, France.
B
B
Couteau
M C
MC
Hobatho
R
R
Darmana
J C
JC
Brignola
J Y
JY
Arlaud
D000368:Aged; D001696:Biomechanical Phenomena; D005269:Femur / Q000000981:diagnostic imaging* / Q000502:physiology*; D006801:Humans; D008297:Male; D008954:Models, Biological; D014057:Tomography, X-Ray Computed; D014732:Vibration