Analytical model of Dynamic AcoustoElastic Testing measurements in trabecular bone tissue: a rheological approach

2012 ◽  
Vol 131 (4) ◽  
pp. 3367-3367
Author(s):  
Hélène Moreschi ◽  
Samuel Callé ◽  
Chloé Trarieux ◽  
Marielle Defontaine
Keyword(s):  
Trabecular Bone ◽  
Bone Tissue ◽  
Analytical Model ◽  
Trabecular Bone Tissue

A decreased subchondral trabecular bone tissue elastic modulus is associated with pre-arthritic cartilage damage

2001 ◽  
Vol 19 (5) ◽  
pp. 914-918 ◽  
Author(s):  
J. S. Day ◽  
M. Ding ◽  
J. C. van der Linden ◽  
I. Hvid ◽  
D. R. Sumner ◽  
...  
Keyword(s):  
Elastic Modulus ◽  
Trabecular Bone ◽  
Bone Tissue ◽  
Cartilage Damage ◽  
Trabecular Bone Tissue

Characterizing the Trabecular Bone Tissue of the Toco Toucan Bill

2018 ◽  
Author(s):  
Cesar H. Comin ◽  
Matheus P. Viana ◽  
Barbara Henning ◽  
Sergio F. dos Reis ◽  
Thais M.P. dos Santos ◽  
...  
Keyword(s):  
Trabecular Bone ◽  
Bone Tissue ◽  
Trabecular Bone Tissue

Bone tissue loads around titanium femoral implant and coated with porous layer

2018 ◽  
Vol 2 (90) ◽  
pp. 77-84
Author(s):  
G. Bobik ◽  
J. Żmudzki ◽  
K. Majewska
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Porous Material ◽  
Trabecular Bone ◽  
Cortical Bone ◽  
Bone Tissue ◽  
The Finite Element Method ◽  
Porous Shell ◽  
Cementless Implant ◽  
Trabecular Bone Tissue

Purpose: Difference in the mechanical properties of bone and stiffer femoral implant causes bone tissue resorption, which may result in implant loosening and periprosthetic fractures. The introduction of porous material reduces the stiffness of the implant. The aim of the study was to analyse the influence of porous shell of femoral revision implant on bone tissue loading distribution with use the finite element method. Design/methodology/approach: Load transfer in the femur has been investigated using the finite element method (Ansys). Cementless implant models were placed in the anatomical femur model. Femur model included sponge bone and cortical bone. The solid implant was compared with the implant containing porous material in 70% in outer layer with a thickness of 2 mm. Load of 1500 N during gait was simulated. In addition, the forces of the ilio-tibial band and the abductor muscles were implemented, as well as the torque acting on the implant. Findings: Increase of stress for the porous model was found. The underload zones in bone have been reduced. Loading distribution was slightly more favourable, albeit rather in cortical bone. Stress value in cancellous bone around cementless implant margin has increased to a level that is dangerous for bone loss. Stress in the implant was not dangerous for damage. The stress distribution was different in the implant neck zone where the porous shell borne a little less load and high stress was shifted to the stiffer core. Research limitations/implications: Variable conditions for fitting the stem to the bone as well as the friction conditions were not investigated. Practical implications: Stress values in the spongy bone around the insertion edge of the cementless implant are consistent with long-term clinical results of the bone atrophy in 1 and 2 Gruen`s zones around the fully porous implants. Originality/value: The advantage of fully porous coated implant was the decrease of risk of trabecular bone tissue resorption around the implant tip and the increase of risk of trabecular bone tissue resorption around insertion edge of the implant.

The elastic moduli and fatigue properties of canine trabecular bone tissue

2001 ◽  
Vol 15 (7) ◽  
pp. 1022-1031
Author(s):  
Kuiwon Choi ◽  
Gon Khang ◽  
Steven A. Goldstein
Keyword(s):  
Trabecular Bone ◽  
Bone Tissue ◽  
Elastic Moduli ◽  
Fatigue Properties ◽  
Trabecular Bone Tissue

scholarly journals Damage Function of a Quasi-Brittle Material, Damage Rate, Acceleration and Jerk during Uniaxial Compression: Model and Application to Analysis of Trabecular Bone Tissue Destruction

Symmetry ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1759
Author(s):  
Gennady Kolesnikov
Keyword(s):  
Trabecular Bone ◽  
Bone Tissue ◽  
Uniaxial Compression ◽  
Brittle Material ◽  
Brittle Materials ◽  
Practical Interest ◽  
Damage Function ◽  
Rate Acceleration ◽  
Damage Process ◽  
Trabecular Bone Tissue

A diversity of quasi-brittle materials can be observed in various engineering structures and natural objects (rocks, frozen soil, concrete, ceramics, bones, etc.). In order to predict the condition and safety of these objects, a large number of studies aimed at analyzing the strength of quasi-brittle materials has been conducted and presented in publications. However, at the modeling level, the problem of estimating the rate and acceleration of destruction of a quasi-brittle material under loading remains relevant. The purpose of the study was to substantiate the function of damage to a quasi-brittle material under uniaxial compression, determine the rate, acceleration and jerk of the damage process, and also to apply the results obtained to predicting the destruction of trabecular bone tissue. In accordance with the purpose of the study, the basic concepts of fracture mechanics and standard methods of mathematical modeling were used. The proposed model is based on the application of the previously obtained differentiable damage function without parameters. The results of the study are presented in the form of plots and analytical relations for computing the rate, acceleration and jerk of the damage process. Examples are given. The predicted peak of the combined effect of rate, acceleration and jerk of the damage process are found to be of practical interest as an additional criterion for destruction. The simulation results agree with the experimental data known from the available literature.

An Innovative CCD-Based High-Resolution CT System for Analysis of Trabecular Bone Tissue

2006 ◽  
Vol 53 (5) ◽  
pp. 2584-2590 ◽  
Author(s):  
F. Baruffaldi ◽  
M. Bettuzzi ◽  
D. Bianconi ◽  
R. Brancaccio ◽  
S. Cornacchia ◽  
...  
Keyword(s):  
High Resolution ◽  
Trabecular Bone ◽  
Bone Tissue ◽  
High Resolution Ct ◽  
Ct System ◽  
Trabecular Bone Tissue
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