Compliance calibration for fracture testing of equine cortical bone

C. L. Malik, J. C. Gibeling, R. B. Martin, Susan M Stover

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


An experimental compliance calibration method for measuring crack length in fracture toughness tests of cortical bone was developed. Calibration tests were conducted on twenty compact type fracture specimens machined from the mid-diaphysis of five pairs of equine third metacarpal bones. Specimens were oriented for crack propagation in a direction transverse to the longitudinal axis of the bone. Specimen compliance was determined from the load vs. crack opening displacement record over a range of crack lengths from 0.48 to 0.75 times the specimen width. The results demonstrate that the compliance calibration method developed for isotropic materials can be used to determine crack length in bone, which is transversely isotropic. However, specimens from lateral and dorsal regions exhibited significantly different compliance calibrations even after differences in elastic modulus were taken into account in the normalized compliance.

Original languageEnglish (US)
Pages (from-to)701-705
Number of pages5
JournalJournal of Biomechanics
Issue number5
StatePublished - 2002
Externally publishedYes


  • Compliance
  • Cortical bone
  • Equine third metacarpal
  • Fracture mechanics
  • Modulus

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


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