...Mohammad Salem; Lindsey Westover; Samer Adeeb; Kajsa Duke To simulate the mechanical and fracture behaviors of cancellous bone in three anatomical directions and to develop an equivalent constitutive model. Microscale extended finite element method (XFEM) models of a cancellous specimen were...

.... Assoc. Editor: Joel D. Stitzel. 23 01 2014 09 05 2014 14 05 2014 Femur fracture at the tip of a total hip replacement (THR), commonly known as Vancouver B1 fracture, is mainly treated using rigid metallic bone plates which may result in “stress shielding” leading to bone...

... on the localization of microcracks in bone using acoustic emission. Microcrack localization is useful to study the fracture process in bone and to prevent fractures in patients. Locating microcracks that occur before fracture allows one to predict where fracture will occur if continued stress is applied to the bone...

...Ahmed Al-Jahwari; Emil H. Schemitsch; Jay S. Wunder; Peter C. Ferguson; Rad Zdero In the presence of a tumor defect, completed humeral shaft fractures continue to be a major surgical challenge since there is no “gold standard” treatment. This is due, in part, to the fact that only one prior...

... the possible fracture risks in bone. 27 05 2011 28 11 2011 21 12 2011 21 12 2011 biomechanics bone composite materials elastic moduli failure (mechanical) fracture molecular biophysics molecular configurations nanomedicine proteins X-ray diffraction mineral crystal...

... that simulates bone fracture while ligaments were governed by a viscoelastic material law. To mimic experimental studies performed in fast dynamic compression, a compressive loading velocity of 1 m/s was applied to the superior half of L2, while the inferior half of L3 was fixed. An exploratory technique...

...Dominic Boisclair; Jean-Marc Mac-Thiong; Stefan Parent; Yvan Petit Vertebral burst fractures are commonly studied with experimental animal models. There is however a lack of consensus as to what parameters are important to create an unstable burst fracture with a significant canal encroachment...

...V. B. Shim; J. Böshme; P. Vaitl; C. Josten; I. A. Anderson Posterior wall fracture is one of the most common fracture types of the acetabulum and a conventional approach is to perform open reduction and internal fixation with a plate and screws. Percutaneous screw fixations, on the other hand, have...

...Brian D. Stemper; Steven G. Storvik; Narayan Yoganandan; Jamie L. Baisden; Ronald J. Fijalkowski; Frank A. Pintar; Barry S. Shender; Glenn R. Paskoff Ejection from military aircraft exerts substantial loads on the lumbar spine. Fractures remain common, although the overall survivability...

...) at velocities between 1 and 5 m/s. The peak force and acoustic emission data were used to develop a statistical relationship of fracture risk as a function of impact force. Acoustic emission sensors were used to provide a noncensored measure of the maxilla tolerance and were essential due to the increase...

... biomedical MRI blood vessels fracture stress-strain relations 25 12 2010 06 05 2011 09 05 2011 14 06 2011 14 06 2011 2011 American Society of Mechanical Engineers ...

..., there is a need for a diagnostic technique that reflects plaque morphology, intrinsic plaque activity, and its structural stability. carotid artery atherosclerosis rupture stress lumen irregularity biomechanics biomedical MRI blood vessels finite element analysis fracture stress-strain...

... in impactor force after fracture onset. In this study, risk functions for fracture were developed using parametric and nonparametric techniques. The results of the statistical analyses suggest that a 50% risk of frontal bone fracture occurs at a force between 1885 N and 2405 N. Subjects that were found...

... is vital for fracture risk prediction in the elderly. This work presents the application of reduced-basis (RB) methods for rapid evaluation of simulation results. Three cylindrical transiliac crest specimens (diameter: 7.5 mm, length: 10–12 mm) were obtained from healthy subjects (20 year-old, 22 year-old...

... volume methods fracture haemodynamics laminar flow turbulence vortices plaque stenosis carotid ulcerated hemorrhaged rupture hemodynamics computational fluid mechanics While the presence of severe stenosis can create intermittent and potentially transitional flow ( 14...

... with fibular fracture in these experiments. The constraint of the subtalar joint in the current study may have affected the mechanics of the foot and led to the resultant strain in the PTaFL. In the real world, talus rotations may be affected by athletic footwear that may influence the location and potential...

...Saeid Kasiri; Ger Reilly; David Taylor The fracture of bone due to indentation with a hard, sharp object is of significance in surgical procedures and certain trauma situations. In the study described below, the fracture of bovine bone under indentation was measured experimentally and predicted...

... tomography fracture 23 11 2009 02 02 2010 11 02 2010 18 05 2010 18 05 2010 2010 American Society of Mechanical Engineers ...

...-term health of an injured knee joint. Forty-two Flemish Giant rabbits received an insult to the left tibiofemoral joint ex vivo in order to document optimal energy and joint orientation needed to generate ACL and meniscal rupture, without gross fracture of bone. Impact energies ranged from 10 J to 22 J...

...Brian T. Rafferty; Estevam A. Bonfante; Malvin N. Janal; Nelson R. F. A. Silva; Elizabeth D. Rekow; Van P. Thompson; Paulo G. Coelho In a crown system, core fracture requires replacement of the restoration. Understanding maximum principal stress concentration in the veneered core of a tooth-crown...