What is the influence of strain rate on human cortical bone propagation mechanisms

Rémy Gauthier (1, 2) , Hélène Follet (3) , Max Langer (2, 4) , Evelyne Gineyts (3) , Cécile Olivier (2, 4) , Pierre-Jean Gouttenoire (2, 4) , Lukas Helfen (4) , Sylvain Meille (5) , Jérome Chevalier (5) , Frédéric Rongieras (1) , Françoise Peyrin (2, 4) , David Mitton (1)

1 LBMC UMR T9406 - Laboratoire de Biomécanique et Mécanique des Chocs
2 Imagerie Tomographique et Radiothérapie
3 LYOS - Physiopathologie, diagnostic et traitements des maladies osseuses / Pathophysiology, Diagnosis & Treatments of Bone Diseases
4 ESRF - European Synchrotron Radiation Facility
5 MATEIS - Matériaux, ingénierie et science [Villeurbanne]

Osteoporosis remains today a major health problem. Cortical bone fracture mechanisms are well documented under quasi - static loading condition. However the influence of strain rate on fracture needs to be better understood as bone fractures mainly occur after a fall from a standing height. The fracture process in human cortical bone is complex, and involves the overall organization of the tissue. Previous results showed that the whole porosity network, from the Haversian system to the lacunar network, as well as the collagen cross - links maturation, might be involved in the crack propagation mechanisms in cortical bone. Thus, the aim of the current study is to collect biomechanical, morphometric and biochemical parameters to make an overall characterization of human cortical bone crack propagation mechanisms considering two different loading conditions.

Mots clés: OSTEOPOROSIS

Mots clés: BIOMECANIQUE

Domaines: Biomécanique [physics.med-ph]

Rémy Gauthier, Hélène Follet, Max Langer, Evelyne Gineyts, Cécile Olivier, et al.. What is the influence of strain rate on human cortical bone propagation mechanisms. 8th World Congress of Biomechanics (WCB 2018), Jul 2018, Dublin, Ireland. ⟨hal-01868513⟩