Failure risk assessment of TKA designs incorporating highly crosslinked UHMWPE

S. M. Kurtz; T. Harrigan; J. S. Bergström; C. M. Rimnac

Failure risk assessment of TKA designs incorporating highly crosslinked UHMWPE

S. M. Kurtz, T. Harrigan, J. S. Bergström, C. M. Rimnac

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The approach, aimed at quantifying the failure risk in highly crosslinked ultrahigh molecular weight polyethylene (UHMWPE) components for TKA was described. The nonconforming contact geometries of a TKA during flexion were represented using a cylinder-on-flat configuration. The approach incorporated the hybrid constitutive model (HM) which was more accurate than the isotropic plasticity model in simulating large deformation behavior leading up to failure. Four UHMWPE materials were investigated, unirradiated, sterilized, 100kGy crosslinked and annealed at 110°C, and 100 kGy crosslinked and remelted at 150°C. The HM model predcited peak residual stresses that were markedly smaller than those predicted using the isotropic plasticity model.

Original language	English (US)
Title of host publication	Transactions - 7th World Biomaterials Congress
Number of pages	1
State	Published - Dec 1 2004
Externally published	Yes
Event	Transactions - 7th World Biomaterials Congress - Sydney, Australia Duration: May 17 2004 → May 21 2004

Publication series

Name	Transactions - 7th World Biomaterials Congress

Other

Other	Transactions - 7th World Biomaterials Congress
Country/Territory	Australia
City	Sydney
Period	5/17/04 → 5/21/04

ASJC Scopus subject areas

Engineering(all)

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@inproceedings{b81e5fd97ef4493d9635c5e663d61b28,

title = "Failure risk assessment of TKA designs incorporating highly crosslinked UHMWPE",

abstract = "The approach, aimed at quantifying the failure risk in highly crosslinked ultrahigh molecular weight polyethylene (UHMWPE) components for TKA was described. The nonconforming contact geometries of a TKA during flexion were represented using a cylinder-on-flat configuration. The approach incorporated the hybrid constitutive model (HM) which was more accurate than the isotropic plasticity model in simulating large deformation behavior leading up to failure. Four UHMWPE materials were investigated, unirradiated, sterilized, 100kGy crosslinked and annealed at 110°C, and 100 kGy crosslinked and remelted at 150°C. The HM model predcited peak residual stresses that were markedly smaller than those predicted using the isotropic plasticity model.",

author = "Kurtz, {S. M.} and T. Harrigan and Bergstr{\"o}m, {J. S.} and Rimnac, {C. M.}",

year = "2004",

month = dec,

day = "1",

language = "English (US)",

isbn = "1877040193",

series = "Transactions - 7th World Biomaterials Congress",

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note = "Transactions - 7th World Biomaterials Congress ; Conference date: 17-05-2004 Through 21-05-2004",

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T1 - Failure risk assessment of TKA designs incorporating highly crosslinked UHMWPE

AU - Kurtz, S. M.

AU - Harrigan, T.

AU - Bergström, J. S.

AU - Rimnac, C. M.

PY - 2004/12/1

Y1 - 2004/12/1

N2 - The approach, aimed at quantifying the failure risk in highly crosslinked ultrahigh molecular weight polyethylene (UHMWPE) components for TKA was described. The nonconforming contact geometries of a TKA during flexion were represented using a cylinder-on-flat configuration. The approach incorporated the hybrid constitutive model (HM) which was more accurate than the isotropic plasticity model in simulating large deformation behavior leading up to failure. Four UHMWPE materials were investigated, unirradiated, sterilized, 100kGy crosslinked and annealed at 110°C, and 100 kGy crosslinked and remelted at 150°C. The HM model predcited peak residual stresses that were markedly smaller than those predicted using the isotropic plasticity model.

AB - The approach, aimed at quantifying the failure risk in highly crosslinked ultrahigh molecular weight polyethylene (UHMWPE) components for TKA was described. The nonconforming contact geometries of a TKA during flexion were represented using a cylinder-on-flat configuration. The approach incorporated the hybrid constitutive model (HM) which was more accurate than the isotropic plasticity model in simulating large deformation behavior leading up to failure. Four UHMWPE materials were investigated, unirradiated, sterilized, 100kGy crosslinked and annealed at 110°C, and 100 kGy crosslinked and remelted at 150°C. The HM model predcited peak residual stresses that were markedly smaller than those predicted using the isotropic plasticity model.

UR - http://www.scopus.com/inward/record.url?scp=13844280464&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=13844280464&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:13844280464

SN - 1877040193

SN - 9781877040191

T3 - Transactions - 7th World Biomaterials Congress

BT - Transactions - 7th World Biomaterials Congress

T2 - Transactions - 7th World Biomaterials Congress

Y2 - 17 May 2004 through 21 May 2004

ER -

Failure risk assessment of TKA designs incorporating highly crosslinked UHMWPE

Abstract

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