An orthopaedic hip implant is expected to support dynamic forces generated by human activities. To avoid progressive and localized damage caused by daily cyclic loading, the prosthesis is to be designed for fatigue under high cycle regime. Recently, a methodology has been developed to design a novel hip implant made of a cellular material with a periodic microarchitecture [1]. In contrast to current hip replacement implants typically made out of a fully solid material, which can be coated with a porous layer, this implant is completely porous. The microarchitecture of the material is a lattice displaying graded property distribution. The advantage of controlling the microarchitecture is twofold. First, the overall implant can be designed to be more compliant, which reduces stress shielding and bone resorption [2]. Second, the material porosity can be optimized to reduce bone-implant interface stresses, thereby lowering implant...

References

References
1.
Khanoki
,
S. A.
, and
Pasini
,
D.
,
2012
, “
Multiscale Design and Multiobjective Optimization of Orthopedic Hip Implants With Functionally Graded Cellular Material
,”
J. Biomech. Eng.
,
134
(
3
), p.
031004
.10.1115/1.4006115
2.
Glassman
,
A.
,
Bobyn
,
J.
, and
Tanzer
,
M.
,
2006
, “
New Femoral Designs Do They Influence Stress Shielding?
,”
Clin. Orthop. Relat. Res.
,
453
(
12
), pp.
64
74
.10.1097/01.blo.0000246541.41951.20
3.
Pal
,
B.
,
Gupta
,
S.
, and
New
,
A.
,
2009
, “
A Numerical Study of Failure Mechanisms in the Cemented Resurfaced Femur: Effects of Interface Characteristics and Bone Remodelling
,”
Proc. Inst. Mech. Eng., Part H: J. Eng. Med.
,
223
(
4
), pp.
471
484
.10.1243/09544119JEIM488
4.
Deb
,
K.
,
Pratap
,
A.
,
Agarwal
,
S.
, and
Meyarivan
,
T.
,
2002
, “
A Fast and Elitist Multiobjective Genetic Algorithm: NSGA-II
,”
IEEE Trans. Evol. Comput.
,
6
(
2
), pp.
182
197
.10.1109/4235.996017
5.
Carter
,
D.
,
Orr
,
T.
, and
Fyhrie
,
D.
,
1989
, “
Relationships Between Loading History and Femoral Cancellous Bone Architecture
,”
J. Biomech.
,
22
(
3
), pp.
231
244
.10.1016/0021-9290(89)90091-2
6.
Weinans
,
H.
,
Huiskes
,
R.
, and
Grootenboer
,
H.
,
1994
, “
Effects of Fit and Bonding Characteristics of Femoral Stems on Adaptive Bone Remodeling
,”
ASME J. Biomech. Eng.
,
116
(
4
), pp.
393
400
.10.1115/1.2895789
7.
Taylor
,
W. R.
,
Roland
,
E.
,
Ploeg
,
H.
,
Hertig
,
D.
,
Klabunde
,
R.
,
Warner
,
M. D.
,
Hobatho
,
M. C.
,
Rakotomanana
,
L.
, and
Clift
,
S. E.
,
2002
, “
Determination of Orthotropic Bone Elastic Constants Using FEA and Modal Analysis
,”
J. Biomech.
,
35
(
6
), pp.
767
773
.10.1016/S0021-9290(02)00022-2
You do not currently have access to this content.