Journal article
A small punch test technique for characterizing the elastic modulus and fracture behavior of PMMA bone cement used in total joint replacement
Biomaterials, v 22(13), pp 1875-1881
2001
PMID: 11396893
Abstract
Polymethylmethacrylate (PMMA) bone cement is used in total joint replacements to anchor implants to the underlying bone. Establishing and maintaining the integrity of bone cement is thus of critical importance to the long-term outcome of joint replacement surgery. The goal of the present study was to evaluate the suitability of a novel testing technique, the small punch or miniaturized disk bend test, to characterize the elastic modulus and fracture behavior of PMMA. We investigated the hypothesis that the crack initiation behavior of PMMA during the small punch test was sensitive to the test temperature. Miniature disk-shaped specimens, 0.5
mm thick and 6.4
mm in diameter, were prepared from PMMA and Simplex-P bone cement according to manufacturers’ instructions. Testing was conducted at ambient and body temperatures, and the effect of test temperature on the elastic modulus and fracture behavior was statistically evaluated using analysis of variance. For both PMMA materials, the test temperature had a significant effect on elastic modulus and crack initiation behavior. At body temperature, the specimens exhibited “ductile” crack initiation, whereas at room temperature “brittle” crack initiation was observed. The small punch test was found to be a sensitive and repeatable test method for evaluating the mechanical behavior of PMMA. In light of the results of this study, future small punch testing should be conducted at body temperature.
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Details
- Title
- A small punch test technique for characterizing the elastic modulus and fracture behavior of PMMA bone cement used in total joint replacement
- Creators
- V.L Giddings - ExponentS.M Kurtz - Exponent (United States)C.W Jewett - ExponentJ.R Foulds - ExponentA.A Edidin - Howmedica Osteonics, R&D Corporate, Allendale, NJ 07401, USA
- Publication Details
- Biomaterials, v 22(13), pp 1875-1881
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000168909100022
- Scopus ID
- 2-s2.0-0034985308
- Other Identifier
- 991019189205704721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Biomedical
- Materials Science, Biomaterials