PMID- 10794228
OWN - NLM
STAT- MEDLINE
DCOM- 20000613
LR  - 20190910
IS  - 0883-5403 (Print)
IS  - 0883-5403 (Linking)
VI  - 15
IP  - 3
DP  - 2000 Apr
TI  - Influence of mechanical behavior on the wear of 4 clinically relevant polymeric 
      biomaterials in a hip simulator.
PG  - 321-31
AB  - The elastic and large-deformation mechanical behavior of 4 materials with known 
      clinical performance was examined and correlated with the wear behavior in a hip 
      simulator. Acetabular liners of a commercially available design were machined 
      from ultra-high molecular weight polyethylene (UHMWPE), high-density polyethylene 
      (HDPE), polytetrafluoroethylene (PTFE), and polyacetal and wear tested in a 
      multidirectional hip joint simulator. Elastic and large-deformation mechanical 
      behavior was directly measured from the wear-tested liners using the small punch 
      test. The finite element method was used to compute elastic modulus from the 
      measured small punch test initial stiffness, and the contact stress for the 
      liners was calculated using the theory of elasticity solution. Positive, 
      statistically significant correlations were observed between the hip simulator 
      wear rate and the initial peak load, ultimate load, and work to failure from the 
      small punch test. Negative correlations were observed between the wear rate and 
      the elastic modulus and contact stress. The results of this study support the 
      hypothesis that the large-deformation mechanical behavior of a polymer plays a 
      greater role in the wear mechanisms prevalent in total hip replacements than the 
      elastic behavior.
FAU - Edidin, A A
AU  - Edidin AA
AD  - Stryker Howmedica Osteonics, Allendale, New Jersey 07401, USA.
FAU - Kurtz, S M
AU  - Kurtz SM
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - J Arthroplasty
JT  - The Journal of arthroplasty
JID - 8703515
RN  - 0 (Biocompatible Materials)
RN  - 0 (Polymers)
SB  - IM
MH  - *Biocompatible Materials
MH  - Elasticity
MH  - *Hip Prosthesis
MH  - Humans
MH  - *Polymers
MH  - Prosthesis Design
MH  - Stress, Mechanical
EDAT- 2000/05/04 09:00
MHDA- 2000/06/17 09:00
CRDT- 2000/05/04 09:00
PHST- 2000/05/04 09:00 [pubmed]
PHST- 2000/06/17 09:00 [medline]
PHST- 2000/05/04 09:00 [entrez]
AID - S0883-5403(00)90647-8 [pii]
AID - 10.1016/s0883-5403(00)90647-8 [doi]
PST - ppublish
SO  - J Arthroplasty. 2000 Apr;15(3):321-31. doi: 10.1016/s0883-5403(00)90647-8.