THE EFFECTS OF PRIOR DAMAGE ON THE RATE-DEPENDENT TORSIONAL STRENGTH OF HUMAN CORTICAL BONE

Karl J. Jepsen; Dwight T. Davy

doi:10.1115/IMECE1996-1240

THE EFFECTS OF PRIOR DAMAGE ON THE RATE-DEPENDENT TORSIONAL STRENGTH OF HUMAN CORTICAL BONE

Karl J. Jepsen
, Dwight T. Davy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The effects of damage accumulation on bone mechanical properties are not well understood. Previously, we identified a significant interaction between damage and the viscoelastic properties of human cortical bone loaded in torsion. In the current study, we further investigate this interaction by testing the hypothesis that damage accumulation significantly alters the rate-dependent nature of bone strength. The results indicated that increasing the twist rate of residual strength tests by only one order of magnitude was associated with a significant, 3-fold increase in strength and modulus degradation. The results suggest that damage accumulation may make cortical bone more susceptible to fracture at high loading rates, which has important implications for understanding the increased fracture frequency associated with falls in the elderly.

Original language	English
Title of host publication	Advances in Bioengineering
Publisher	American Society of Mechanical Engineers (ASME)
Pages	313-314
Number of pages	2
ISBN (Electronic)	9780791815403
DOIs	https://doi.org/10.1115/IMECE1996-1240
State	Published - 1996
Externally published	Yes
Event	ASME 1996 International Mechanical Engineering Congress and Exposition, IMECE 1996 - Atlanta, United States Duration: 17 Nov 1996 → 22 Nov 1996

Publication series

Name	ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume	1996-D

Conference

Conference	ASME 1996 International Mechanical Engineering Congress and Exposition, IMECE 1996
Country/Territory	United States
City	Atlanta
Period	17/11/96 → 22/11/96

Access to Document

10.1115/IMECE1996-1240

Cite this

@inproceedings{4ccf9506d1fc415498bd637aac2e3d0a,

title = "THE EFFECTS OF PRIOR DAMAGE ON THE RATE-DEPENDENT TORSIONAL STRENGTH OF HUMAN CORTICAL BONE",

abstract = "The effects of damage accumulation on bone mechanical properties are not well understood. Previously, we identified a significant interaction between damage and the viscoelastic properties of human cortical bone loaded in torsion. In the current study, we further investigate this interaction by testing the hypothesis that damage accumulation significantly alters the rate-dependent nature of bone strength. The results indicated that increasing the twist rate of residual strength tests by only one order of magnitude was associated with a significant, 3-fold increase in strength and modulus degradation. The results suggest that damage accumulation may make cortical bone more susceptible to fracture at high loading rates, which has important implications for understanding the increased fracture frequency associated with falls in the elderly.",

author = "Jepsen, \{Karl J.\} and Davy, \{Dwight T.\}",

note = "Publisher Copyright: {\textcopyright} 1996 American Society of Mechanical Engineers (ASME). All rights reserved.; ASME 1996 International Mechanical Engineering Congress and Exposition, IMECE 1996 ; Conference date: 17-11-1996 Through 22-11-1996",

year = "1996",

doi = "10.1115/IMECE1996-1240",

language = "English",

series = "ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)",

publisher = "American Society of Mechanical Engineers (ASME)",

pages = "313--314",

booktitle = "Advances in Bioengineering",

}

Jepsen, KJ & Davy, DT 1996, THE EFFECTS OF PRIOR DAMAGE ON THE RATE-DEPENDENT TORSIONAL STRENGTH OF HUMAN CORTICAL BONE. in Advances in Bioengineering. ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), vol. 1996-D, American Society of Mechanical Engineers (ASME), pp. 313-314, ASME 1996 International Mechanical Engineering Congress and Exposition, IMECE 1996, Atlanta, United States, 17/11/96. https://doi.org/10.1115/IMECE1996-1240

THE EFFECTS OF PRIOR DAMAGE ON THE RATE-DEPENDENT TORSIONAL STRENGTH OF HUMAN CORTICAL BONE. / Jepsen, Karl J.; Davy, Dwight T.
Advances in Bioengineering. American Society of Mechanical Engineers (ASME), 1996. p. 313-314 (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 1996-D).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - THE EFFECTS OF PRIOR DAMAGE ON THE RATE-DEPENDENT TORSIONAL STRENGTH OF HUMAN CORTICAL BONE

AU - Jepsen, Karl J.

AU - Davy, Dwight T.

PY - 1996

Y1 - 1996

N2 - The effects of damage accumulation on bone mechanical properties are not well understood. Previously, we identified a significant interaction between damage and the viscoelastic properties of human cortical bone loaded in torsion. In the current study, we further investigate this interaction by testing the hypothesis that damage accumulation significantly alters the rate-dependent nature of bone strength. The results indicated that increasing the twist rate of residual strength tests by only one order of magnitude was associated with a significant, 3-fold increase in strength and modulus degradation. The results suggest that damage accumulation may make cortical bone more susceptible to fracture at high loading rates, which has important implications for understanding the increased fracture frequency associated with falls in the elderly.

AB - The effects of damage accumulation on bone mechanical properties are not well understood. Previously, we identified a significant interaction between damage and the viscoelastic properties of human cortical bone loaded in torsion. In the current study, we further investigate this interaction by testing the hypothesis that damage accumulation significantly alters the rate-dependent nature of bone strength. The results indicated that increasing the twist rate of residual strength tests by only one order of magnitude was associated with a significant, 3-fold increase in strength and modulus degradation. The results suggest that damage accumulation may make cortical bone more susceptible to fracture at high loading rates, which has important implications for understanding the increased fracture frequency associated with falls in the elderly.

UR - https://www.scopus.com/pages/publications/85169295068

U2 - 10.1115/IMECE1996-1240

DO - 10.1115/IMECE1996-1240

M3 - Conference contribution

AN - SCOPUS:85169295068

T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)

SP - 313

EP - 314

BT - Advances in Bioengineering

PB - American Society of Mechanical Engineers (ASME)

T2 - ASME 1996 International Mechanical Engineering Congress and Exposition, IMECE 1996

Y2 - 17 November 1996 through 22 November 1996

ER -

THE EFFECTS OF PRIOR DAMAGE ON THE RATE-DEPENDENT TORSIONAL STRENGTH OF HUMAN CORTICAL BONE

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