Journal article
Influence of mechanical behavior on the wear of 4 clinically relevant polymeric biomaterials in a hip simulator
The Journal of arthroplasty, v 15(3), pp 321-331
2000
PMID: 10794228
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
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.
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Details
- Title
- Influence of mechanical behavior on the wear of 4 clinically relevant polymeric biomaterials in a hip simulator
- Creators
- Avram A. Edidin - StrykerSteven M. Kurtz - Exponent
- Publication Details
- The Journal of arthroplasty, v 15(3), pp 321-331
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000086458900009
- Scopus ID
- 2-s2.0-0034031695
- Other Identifier
- 991019189124604721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Orthopedics