Abstract
| Original language | English |
|---|---|
| Pages | 1412 |
| Number of pages | 1 |
| Publication status | Published - Jul 2014 |
| Event | 7th World Congress of Biomechanics - John B. Hynes Veterans Memorial Convention Center, Boston, United States Duration: 6 Jul 2014 → 11 Jul 2014 |
Conference
| Conference | 7th World Congress of Biomechanics |
|---|---|
| Country | United States |
| City | Boston |
| Period | 6/07/14 → 11/07/14 |
Fingerprint
Keywords
- sawbones
- artificial composite femur
- composite bones
- orthopaedic devices
Cite this
}
Characterisation and Validation of Sawbones™ Artificial Composite Femur material. / Gilroy, D.; Young, A. M.; Phillips, A.; Wheel, M.; Riches, P. E.
2014. 1412 Poster session presented at 7th World Congress of Biomechanics, Boston, United States.Research output: Contribution to conference › Poster
TY - CONF
T1 - Characterisation and Validation of Sawbones™ Artificial Composite Femur material
AU - Gilroy, D.
AU - Young, A. M.
AU - Phillips, A.
AU - Wheel, M.
AU - Riches, P. E.
PY - 2014/7
Y1 - 2014/7
N2 - Sawbones 4th Generation composite bones are useful tools for the mechanical testing of orthopaedic devices and validation of FE models. The products are intended to provide more reliability and less variability than cadaveric specimens, and have been often used in biomechanical analyses. However, no independent validation of these data exists. Three point bending tests on the cortical component of the femur and on sheets of the same material were conducted in separate independent laboratories to determine the Young’s modulus of the material. These data were incorporated into a FE model of a femur to be validated against an equivalent mechanical test using both force-displacement and strain gauge data. There was significant inter-sample variability in Young’s modulus, potentially due to microstructural heterogeneity. All samples were significantly less stiff than the quoted value of 16.0 GPa (Sawbones 2014), with a mean Young’s modulus of 10.7 GPa calculated for the cortical sample and 8.4 GPa for the sheets. The FE model compared favourably with the mechanical testing, with a 3.3% higher stiffness than that recorded experimentally, giving confidence in our Young’s modulus data. This paper has highlighted that that care must be taken when employing these products as substitutes for cadaveric specimens.
AB - Sawbones 4th Generation composite bones are useful tools for the mechanical testing of orthopaedic devices and validation of FE models. The products are intended to provide more reliability and less variability than cadaveric specimens, and have been often used in biomechanical analyses. However, no independent validation of these data exists. Three point bending tests on the cortical component of the femur and on sheets of the same material were conducted in separate independent laboratories to determine the Young’s modulus of the material. These data were incorporated into a FE model of a femur to be validated against an equivalent mechanical test using both force-displacement and strain gauge data. There was significant inter-sample variability in Young’s modulus, potentially due to microstructural heterogeneity. All samples were significantly less stiff than the quoted value of 16.0 GPa (Sawbones 2014), with a mean Young’s modulus of 10.7 GPa calculated for the cortical sample and 8.4 GPa for the sheets. The FE model compared favourably with the mechanical testing, with a 3.3% higher stiffness than that recorded experimentally, giving confidence in our Young’s modulus data. This paper has highlighted that that care must be taken when employing these products as substitutes for cadaveric specimens.
KW - sawbones
KW - artificial composite femur
KW - composite bones
KW - orthopaedic devices
UR - http://wcb2014.com/
M3 - Poster
SP - 1412
ER -