Fatigue performance of composite analogue femur constructs

Alexander C.M. Chong, Elizabeth A. Friis, Gregory P. Ballard, Peter J. Czuwala, Francis W. Cooke

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Six 3 rd generation and six 4 th generation mechanical analogue proximal femur models were implanted with cemented, polished surface femoral components in a mock total hip arthroplasty (THA). The objective of the study was to test whether or not the 4 th generation analogue bone models have significantly improved resistance to fracture and fatigue as compared to the 3 rd generation bone models in a clinically relevant in situ type test. The average final failure (total structural failure) of the 3 rd generation femurs occurred at 3.16 million cycles. Changes in actuator displacement and crazing in the 3 rd generation bones occurred at a much lower number of cycles. In contrast, the 4 th generation femurs were cycled for 10 million cycles with no total structural failure in any specimen. All 4 th generation specimens showed very little change in actuator deflection and only one of the specimens exhibited visible crazing at a high cycle count. These results are in line with previously tested fracture toughness and fatigue crack propagation rate test results. The results from the in situ testing provided evidence that the 4 th generation analogue bones exhibit superior performance in fatigue testing applications as compared to the 3 rd generation bones.

Original languageEnglish (US)
Title of host publicationProceedings of the 2005 Summer Bioengineering Conference, 2005 SBC
Pages533-534
Number of pages2
StatePublished - Dec 1 2005
Event2005 Summer Bioengineering Conference - Vail, CO, United States
Duration: Jun 22 2005Jun 26 2005

Publication series

NameProceedings of the 2005 Summer Bioengineering Conference
Volume2005

Conference

Conference2005 Summer Bioengineering Conference
CountryUnited States
CityVail, CO
Period6/22/056/26/05

Fingerprint

Bone
Fatigue of materials
Composite materials
Crazing
Actuators
Arthroplasty
Fatigue testing
Fatigue crack propagation
Fracture toughness
Testing

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Chong, A. C. M., Friis, E. A., Ballard, G. P., Czuwala, P. J., & Cooke, F. W. (2005). Fatigue performance of composite analogue femur constructs. In Proceedings of the 2005 Summer Bioengineering Conference, 2005 SBC (pp. 533-534). (Proceedings of the 2005 Summer Bioengineering Conference; Vol. 2005).

Fatigue performance of composite analogue femur constructs. / Chong, Alexander C.M.; Friis, Elizabeth A.; Ballard, Gregory P.; Czuwala, Peter J.; Cooke, Francis W.

Proceedings of the 2005 Summer Bioengineering Conference, 2005 SBC. 2005. p. 533-534 (Proceedings of the 2005 Summer Bioengineering Conference; Vol. 2005).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Chong, ACM, Friis, EA, Ballard, GP, Czuwala, PJ & Cooke, FW 2005, Fatigue performance of composite analogue femur constructs. in Proceedings of the 2005 Summer Bioengineering Conference, 2005 SBC. Proceedings of the 2005 Summer Bioengineering Conference, vol. 2005, pp. 533-534, 2005 Summer Bioengineering Conference, Vail, CO, United States, 6/22/05.
Chong ACM, Friis EA, Ballard GP, Czuwala PJ, Cooke FW. Fatigue performance of composite analogue femur constructs. In Proceedings of the 2005 Summer Bioengineering Conference, 2005 SBC. 2005. p. 533-534. (Proceedings of the 2005 Summer Bioengineering Conference).
Chong, Alexander C.M. ; Friis, Elizabeth A. ; Ballard, Gregory P. ; Czuwala, Peter J. ; Cooke, Francis W. / Fatigue performance of composite analogue femur constructs. Proceedings of the 2005 Summer Bioengineering Conference, 2005 SBC. 2005. pp. 533-534 (Proceedings of the 2005 Summer Bioengineering Conference).
@inproceedings{8fd4f5e2433f46a791caa1629d3d3b73,
title = "Fatigue performance of composite analogue femur constructs",
abstract = "Six 3 rd generation and six 4 th generation mechanical analogue proximal femur models were implanted with cemented, polished surface femoral components in a mock total hip arthroplasty (THA). The objective of the study was to test whether or not the 4 th generation analogue bone models have significantly improved resistance to fracture and fatigue as compared to the 3 rd generation bone models in a clinically relevant in situ type test. The average final failure (total structural failure) of the 3 rd generation femurs occurred at 3.16 million cycles. Changes in actuator displacement and crazing in the 3 rd generation bones occurred at a much lower number of cycles. In contrast, the 4 th generation femurs were cycled for 10 million cycles with no total structural failure in any specimen. All 4 th generation specimens showed very little change in actuator deflection and only one of the specimens exhibited visible crazing at a high cycle count. These results are in line with previously tested fracture toughness and fatigue crack propagation rate test results. The results from the in situ testing provided evidence that the 4 th generation analogue bones exhibit superior performance in fatigue testing applications as compared to the 3 rd generation bones.",
author = "Chong, {Alexander C.M.} and Friis, {Elizabeth A.} and Ballard, {Gregory P.} and Czuwala, {Peter J.} and Cooke, {Francis W.}",
year = "2005",
month = "12",
day = "1",
language = "English (US)",
isbn = "0974249211",
series = "Proceedings of the 2005 Summer Bioengineering Conference",
pages = "533--534",
booktitle = "Proceedings of the 2005 Summer Bioengineering Conference, 2005 SBC",

}

TY - GEN

T1 - Fatigue performance of composite analogue femur constructs

AU - Chong, Alexander C.M.

AU - Friis, Elizabeth A.

AU - Ballard, Gregory P.

AU - Czuwala, Peter J.

AU - Cooke, Francis W.

PY - 2005/12/1

Y1 - 2005/12/1

N2 - Six 3 rd generation and six 4 th generation mechanical analogue proximal femur models were implanted with cemented, polished surface femoral components in a mock total hip arthroplasty (THA). The objective of the study was to test whether or not the 4 th generation analogue bone models have significantly improved resistance to fracture and fatigue as compared to the 3 rd generation bone models in a clinically relevant in situ type test. The average final failure (total structural failure) of the 3 rd generation femurs occurred at 3.16 million cycles. Changes in actuator displacement and crazing in the 3 rd generation bones occurred at a much lower number of cycles. In contrast, the 4 th generation femurs were cycled for 10 million cycles with no total structural failure in any specimen. All 4 th generation specimens showed very little change in actuator deflection and only one of the specimens exhibited visible crazing at a high cycle count. These results are in line with previously tested fracture toughness and fatigue crack propagation rate test results. The results from the in situ testing provided evidence that the 4 th generation analogue bones exhibit superior performance in fatigue testing applications as compared to the 3 rd generation bones.

AB - Six 3 rd generation and six 4 th generation mechanical analogue proximal femur models were implanted with cemented, polished surface femoral components in a mock total hip arthroplasty (THA). The objective of the study was to test whether or not the 4 th generation analogue bone models have significantly improved resistance to fracture and fatigue as compared to the 3 rd generation bone models in a clinically relevant in situ type test. The average final failure (total structural failure) of the 3 rd generation femurs occurred at 3.16 million cycles. Changes in actuator displacement and crazing in the 3 rd generation bones occurred at a much lower number of cycles. In contrast, the 4 th generation femurs were cycled for 10 million cycles with no total structural failure in any specimen. All 4 th generation specimens showed very little change in actuator deflection and only one of the specimens exhibited visible crazing at a high cycle count. These results are in line with previously tested fracture toughness and fatigue crack propagation rate test results. The results from the in situ testing provided evidence that the 4 th generation analogue bones exhibit superior performance in fatigue testing applications as compared to the 3 rd generation bones.

UR - http://www.scopus.com/inward/record.url?scp=33646564678&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33646564678&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:33646564678

SN - 0974249211

SN - 9780974249216

T3 - Proceedings of the 2005 Summer Bioengineering Conference

SP - 533

EP - 534

BT - Proceedings of the 2005 Summer Bioengineering Conference, 2005 SBC

ER -