The creation of 3-D finite element (FE) models of bone and implant-bone systems is a labor-intensive task due to the need to model different cases and variations, to perform patch tests and to account for the nonhomogeneous material properties with an acceptable amount of work. In this study, we developed an interface between a precision QCT and a FE system and applied it to a specimen bone. With the new method, the time necessary for model generation was reduced substantially. Furthermore, the elastic properties for each element were automatically derived from the corresponding CT-values. In order to demonstrate the importance of taking into account inhomogeneity, a comparison between the nonhomogeneous model and a homogeneous, “averaged” model was performed.
Issue Section:
Technical Papers
1.
Bergmann
G.
Neff
G.
Rohlmann
A.
Graichen
F.
1990
, “Influence of Orthotic Devices on the Forces at the Hip Joint
,” Trans. Orthop. Res. Soc.
, Vol. 15
, p. 1
1
.2.
Carter
D. R.
Hayes
W. C.
1977
, “The Compressive Behavior of Bone as a Two-Phased Porous Structure
,” J. Bone Jt. Surg.
, 59A
(7
), pp. 954
–962
.3.
Edidin, 1991, “Modeling of Bone Material Properties from CT Scans-Considerations in Biomechanical Structural Models,” PhD Dissertation Cornell University.
4.
Edidin
A. A.
Taylor
D. L.
Bartel
D. L.
1991
, “Automatic Assignement of Bone Moduli From CT Data: A 3-D Finite Element Study
,” Trans. Orthop. Res. Soc.
, Vol. 16
, p. 491
491
.5.
Harp
J. H.
Aronson
J.
Hollis
J. M.
1991
, “Measured Mechanical Stiffness of the Canine Tibia Predicted by a QCT Base Finite Element Analysis
,” Trans. Orthop. Res. Soc.
, Vol. 16
, p. 487
487
.6.
Harrigan
T. P.
Jasty
M.
Mann
R. W.
Harris
W. H.
1988
, “Limitations of the Continuum Assumption in Cancellous Bone
,” J. Biomechanics
, Vol. 21
, pp. 269
–275
.7.
Hayes, W. C., Snyder, B., Levine, B. M., Ramaswamy, S., 1982, “Stress-Morphology Relationships in Trabecular Bone of the Patella,” Finite Elements in Biomechanics, (Gallagher, R. H., Simon, B. R., Johnson, P. C., Gross, J. F., eds., pp. 223–269, John Wiley & Sons Ltd., Chichester.
8.
Hollister, S. J., Brennan, J. M., Kikuchi, N., 1992, “Homogenization Sampling Analysis of Trabecular Bone Microstructural Mechanics,” Computer Methods in Biomechanics & Biomedical Engineering Middleton, J., Pande, G. N., Williams, K. R., eds., pp. 308–317, Books & Journals International Ltd.
9.
Huiskes
R.
Chao
E. Y. S.
1983
, “A Survey of Finite Element Analysis in Orthopedic Biomechanics: The First Decade
,” J. Biomechanics
, Vol. 16
, pp. 385
–409
.10.
Keyak
J. H.
Meagher
J. M.
Skinner
H. B.
Mote
C. D.
1990
, “Automated Three-Dimensional Finite Element Modelling of Bone: A New Method
,” J. Biomed. Eng.
, Vol. 12
, pp. 389
–397
.11.
Knauss, P., 1980, “Materialkennwerte und Festigkeitsverhalten des spongio¨sen und kompakten Knochengewebes am coxalen Human-Femur,” PhD Thesis, Universita¨t Stuttgart.
12.
Lanyon
L. E.
Hampson
W. G. J.
Goodship
A. E.
Shah
J. S.
1975
, “Bone Deformation Recorded In Vivo From Strain Gauges Attached to the Human Tibial Shaft
,” Acta Orthop. Scandinavica
, Vol. 46
: pp. 256
–268
.13.
Lotz
J. C.
Cheal
E. J.
Hayes
W. C.
1991
, “Fracture Prediction for the Proximal Femur Using Finite Element Models: Part I - Linear Analysis
,” ASME JOURNAL OF BIOMECHANICAL ENGINEERING
, Vol. 113
, pp. 353
–360
.14.
Marom
S. A.
Linden
M. J.
1990
, “Computer Aided Stress Analysis of Long Bones Utilizing Computed Tomography
,” J. Biomechanics
, Vol. 23
(5
), pp. 399
–404
.15.
McCarthy, 1989, “Bone Geometry from CAT Scans for Finite Element Analysis - Image Processing Considerations and Modelling Effects,” Ph.D dissertation Cornell University.
16.
Mu¨ller
A. B.
Ru¨egsegger
E.
Ru¨egsegger
P.
1989
, “Peripheral QCT: A Low-Risk Procedure to Identify Women Predisposed to Osteoporosis
.” Phys. Med. Biol.
, Vol. 34
, pp. 741
–749
.17.
Mu¨ller, R., Merz, B., Ru¨egsegger, P., 1990, “Interfacing Quantitative Computed Tomography with Finite Element Modeling,” SPIE Vol. 1395 Close-Range Photogrammetry Meets Machine Vision, pp. 1092–1099.
18.
Mu¨ller
R.
Ru¨egsegger
P.
1995
, “Three-Dimensional Finite Element Modeling of Non-Invasively Assessed Trabecular Bone Structure
,” J. Med. Eng. Phys.
, Vol. 17
: pp. 126
–133
.19.
Pauwels, F., 1965, Gesammelte Abhandlungen zur funktionellen Anatomie des Bewegungsapparates, Springer Verlag, Berlin Heidelberg New York.
20.
Rice
J. C.
Cowin
S. C.
Bowman
J. A.
1988
, “On the Dependence of the Elasticity and Strength of Cancellous Bone on Apparent Density
,” J. Biomechanics
, Vol. 21
(2
), pp. 155
–168
.21.
Rohlmann
A.
Mo¨ssner
U.
Bergmann
G.
1983
, “Finite-Element-Analysis and Experimental Investigation in a Femur with Hip Endoprosthesis
,” J. Biomechanics
, Vol. 16
, pp. 727
–742
.22.
Ru¨egsegger
P.
Mu¨nch
B.
Felder
M.
1993
, “Early Detection of Osteoarthritis by 3D Computed Tomography
,” Technology and Health Care
, Vol. 1
, pp. 53
–66
.23.
Ru¨egsegger
P.
1994
, “The User of Precision QCT in the Evaluation of Bone Remodelling
,” Endocrinologist
, Vol. 4
, pp. 167
–176
.24.
Seitz, P., Ru¨egsegger, P., 1983, “Fast Contour Detection Algorithm for High Precision Quantitative CT,” IEE Trans Med Imag MI-2. pp. 136–141.
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