Characterization of dynamic three-dimensional strain fields in the canine radius

John C. Coleman, Richard T. Hart, Ichiro Owan, Yuichi Tankano, David Burr

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

This note describes a method to approximate the 3-D mechanical environment of a long bone during a normal daily activity. Our specific goal was to characterize the temporal and spatial strain distributions in the mid-shaft region of the canine radius during gait. Direct measurement of strains along the entire surface of in vivo bone is not feasible, so we employed a combination of experimental measurements and numerical interpolation techniques to approximate the time-varying longitudinal strain distribution. Using standard in vivo strain gauging techniques, we measured dynamic strains at nine locations (three locations on each of three cross sections, data pooled from two experimental animals) on the canine radius during trotting gait. These in vivo strain measurements were then used to approximate the time course of the strain field for the entire radius mid-shaft region using a 3-D numerical interpolation scheme using finite element basis functions. Despite limitations in the present implementation of the method, the results show that there are considerable time-dependent variations in the strain distribution occurring at different transverse sections along the length of the diaphysis with substantial anteroposterior bending and rotation of neutral axis locations during the gait cycle.

Original languageEnglish
Pages (from-to)1677-1683
Number of pages7
JournalJournal of Biomechanics
Volume35
Issue number12
DOIs
StatePublished - Dec 1 2002

Fingerprint

Canidae
Gait
Bone and Bones
Diaphyses
Interpolation
Bone
Gaging
Strain measurement
Animals

Keywords

  • Functional strains
  • Interpolation
  • Spatial and temporal
  • Strain distribution
  • Strain gauge

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Cite this

Characterization of dynamic three-dimensional strain fields in the canine radius. / Coleman, John C.; Hart, Richard T.; Owan, Ichiro; Tankano, Yuichi; Burr, David.

In: Journal of Biomechanics, Vol. 35, No. 12, 01.12.2002, p. 1677-1683.

Research output: Contribution to journalArticle

Coleman, John C. ; Hart, Richard T. ; Owan, Ichiro ; Tankano, Yuichi ; Burr, David. / Characterization of dynamic three-dimensional strain fields in the canine radius. In: Journal of Biomechanics. 2002 ; Vol. 35, No. 12. pp. 1677-1683.
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