The Effect of Press Fit on Osseointegration of Acetabular Cup
The primary cause of Total Hip Replacement (THR)
failure for younger patients is aseptic loosening. This complication is
twice more likely to happen in acetabular cup than in femoral stem.
Excessive micromotion between bone and implant will cause
loosening and it depends in patient activities, age and bone. In this
project, the effects of different metal back design of press fit on
osseointegration of the acetabular cup are carried out. Commercial
acetabular cup designs, namely Spiked, Superfix and Quadrafix are
modelled and analyzed using commercial finite element software.
The diameter of acetabular cup is based on the diameter of acetabular
rim to make sure the component fit to the acetabular cavity. A new
design of acetabular cup are proposed and analyzed to get better
osseointegration between the bones and implant interface. Results
shows that the proposed acetabular cup designs are more stable
compared to other designs with respect to stress and displacement
aspects.
[1] B.M. Wroblewski, P.D. Siney, and A. Fleming, "Charnley low-frictional
torque arthroplasty in patients under the age of 51 years FOLLOW-UP
TO 33 YEARS" Journal of Bone and Joint Surgery, vol. 84-b (4), 2002.
[2] M.R. Abdul Kadir, Interface Micromotion in Cementless Hip
Prostheses, PhD Thesis, Imperial College London, United Kingdom,
2005.
[3] K. Soballe, "Hydroxyapatite ceramic coating for bone implant fixation.
Mechanical and histological studies in dogs," Acta Orthop Scand, Suppl
255, 1993.
[4] I.R. Spears, M. Pfleiderer, E. Schneider, E. Hille, G. Bergmann, and
M.M. Morlock, "Interfacial conditions between a press-fit acetabular
cup and bone during daily activities: implifications for achieving bone
in-growth," Journal of Biomechanics 33, 2000.
[5] Brand, 1994 R.A. Brand, D.R. Pedersen, D.T. Davy, G.M. Kotzar, K.G.
Heiple and V.M. Goldberg, Comparison of hip force calculations and
measurements in the same patient, Journal of Arthroplasty 9 (1) (1994),
pp. 45-51
[6] J.C. Fialho, P.R. Fernasdes, E. Luis, and J. Folgado, "Computational hip
joint simulator for wear and heat generation," Journal of Biomechanics,
2006.
[1] B.M. Wroblewski, P.D. Siney, and A. Fleming, "Charnley low-frictional
torque arthroplasty in patients under the age of 51 years FOLLOW-UP
TO 33 YEARS" Journal of Bone and Joint Surgery, vol. 84-b (4), 2002.
[2] M.R. Abdul Kadir, Interface Micromotion in Cementless Hip
Prostheses, PhD Thesis, Imperial College London, United Kingdom,
2005.
[3] K. Soballe, "Hydroxyapatite ceramic coating for bone implant fixation.
Mechanical and histological studies in dogs," Acta Orthop Scand, Suppl
255, 1993.
[4] I.R. Spears, M. Pfleiderer, E. Schneider, E. Hille, G. Bergmann, and
M.M. Morlock, "Interfacial conditions between a press-fit acetabular
cup and bone during daily activities: implifications for achieving bone
in-growth," Journal of Biomechanics 33, 2000.
[5] Brand, 1994 R.A. Brand, D.R. Pedersen, D.T. Davy, G.M. Kotzar, K.G.
Heiple and V.M. Goldberg, Comparison of hip force calculations and
measurements in the same patient, Journal of Arthroplasty 9 (1) (1994),
pp. 45-51
[6] J.C. Fialho, P.R. Fernasdes, E. Luis, and J. Folgado, "Computational hip
joint simulator for wear and heat generation," Journal of Biomechanics,
2006.
@article{"International Journal of Medical, Medicine and Health Sciences:49927", author = "Nor Azali Azmir and Iskhrizat Taib and Mohammed Rafiq Abdul Kadir", title = "The Effect of Press Fit on Osseointegration of Acetabular Cup", abstract = "The primary cause of Total Hip Replacement (THR)
failure for younger patients is aseptic loosening. This complication is
twice more likely to happen in acetabular cup than in femoral stem.
Excessive micromotion between bone and implant will cause
loosening and it depends in patient activities, age and bone. In this
project, the effects of different metal back design of press fit on
osseointegration of the acetabular cup are carried out. Commercial
acetabular cup designs, namely Spiked, Superfix and Quadrafix are
modelled and analyzed using commercial finite element software.
The diameter of acetabular cup is based on the diameter of acetabular
rim to make sure the component fit to the acetabular cavity. A new
design of acetabular cup are proposed and analyzed to get better
osseointegration between the bones and implant interface. Results
shows that the proposed acetabular cup designs are more stable
compared to other designs with respect to stress and displacement
aspects.", keywords = "Finite element analysis, total hip replacement, acetabular cup, loosening.", volume = "6", number = "10", pages = "464-5", }