UNCONSTRAINED SHEAR FAILURE OF THE OSTOECHONDRAL REGION AT LOW STRAIN RATES. DAVID R. FOUST MEMORIAL FUND AWARD PAPER
The effect of strain rate on the mechanism of failure of the osteochondral region of immature and mature cartilage on bone in unconstrained shear, loaded through the cartilage layer only, is examined. Strain rate did not affect the fracture mechanism or the fracture load levels in either tissue but only influenced the extent of cartilage deformation before fracture initiation. The exact mechanism of osteochondral failure was found to be the same as observed during impact loading where it depended on skeletal maturity only. Shear fracture of the immature tissue always occurred subchondrally and progressed in a stepwise manner by the propagation of a relatively large crack. By contrast failure in the skeletally mature tissue occurred by the advance of a much smaller crack which propagated within the well-defined tidemark region. (A) For the covering abstract of the conference see IRRD 873507.
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Corporate Authors:
ASSOCIATION FOR THE ADVANCEMENT OF AUTOMOTIVE MEDICINE (AAAM)
2350 EAST DEVON AVENUE, SUITE 205
DES PLAINES, United States 60018 -
Authors:
- FLACHSMANN, R
- OLOYEDE, A
- BROOM, N D
- Conference:
- Publication Date: 1994
Language
- English
Media Info
- Features: References;
- Pagination: p. 375-92
Subject/Index Terms
- TRT Terms: Adolescents; Anatomical joints; Children; Conferences; Deformation; Diseases and medical conditions; Failure; Fractures (Anatomy); Loads; Prevention
- Geographic Terms: New Zealand
- ITRD Terms: 1748: Adolescent; 1758: Child; 8525: Conference; 5595: Deformation; 5520: Failure; 2161: Fracture (bone); 2005: Joint (human); 5567: Load; 2154: Medical aspects; 8079: New Zealand; 9149: Prevention
- Subject Areas: Safety and Human Factors; Security and Emergencies;
Filing Info
- Accession Number: 00714325
- Record Type: Publication
- Source Agency: Institute for Road Safety Research, SWOV
- Files: ITRD
- Created Date: Dec 27 1995 12:00AM