Subject-specific finite element models of long bones: An in vitro evaluation of the overall accuracy

2006 ◽  
Vol 39 (13) ◽  
pp. 2457-2467 ◽  
Author(s):  
Fulvia Taddei ◽  
Luca Cristofolini ◽  
Saulo Martelli ◽  
H.S. Gill ◽  
Marco Viceconti
Keyword(s):  
Finite Element ◽  
Finite Element Models ◽  
Long Bones ◽  
In Vitro Evaluation ◽  
Subject Specific

Subject-specific finite element models can accurately predict strain levels in long bones

2007 ◽  
Vol 40 (13) ◽  
pp. 2982-2989 ◽  
Author(s):  
Enrico Schileo ◽  
Fulvia Taddei ◽  
Andrea Malandrino ◽  
Luca Cristofolini ◽  
Marco Viceconti
Keyword(s):  
Finite Element ◽  
Finite Element Models ◽  
Long Bones ◽  
Subject Specific

scholarly journals Subject-Specific Inverse Dynamics of the Head and Cervical Spine During in Vivo Dynamic Flexion-Extension

2013 ◽  
Vol 135 (6) ◽  
Author(s):  
William J. Anderst ◽  
William F. Donaldson ◽  
Joon Y. Lee ◽  
James D. Kang
Keyword(s):  
Finite Element ◽  
Cervical Spine ◽  
Inverse Dynamics ◽  
Total Force ◽  
Finite Element Models ◽  
Moment Arms ◽  
Flexion Extension ◽  
Subject Specific

The effects of degeneration and surgery on cervical spine mechanics are commonly evaluated through in vitro testing and finite element models derived from these tests. The objectives of the current study were to estimate the load applied to the C2 vertebra during in vivo functional flexion-extension and to evaluate the effects of anterior cervical arthrodesis on spine kinetics. Spine and head kinematics from 16 subjects (six arthrodesis patients and ten asymptomatic controls) were determined during functional flexion-extension using dynamic stereo X-ray and conventional reflective markers. Subject-specific inverse dynamics models, including three flexor muscles and four extensor muscles attached to the skull, estimated the force applied to C2. Total force applied to C2 was not significantly different between arthrodesis and control groups at any 10 deg increment of head flexion-extension (all p values ≥ 0.937). Forces applied to C2 were smallest in the neutral position, increased slowly with flexion, and increased rapidly with extension. Muscle moment arms changed significantly during flexion-extension, and were dependent upon the direction of head motion. The results suggest that in vitro protocols and finite element models that apply constant loads to C2 do not accurately represent in vivo cervical spine kinetics.

Accurate prediction of strain values from subject specific finite element models of long bones

2006 ◽  
Vol 39 ◽  
pp. S12 ◽  
Author(s):  
E. Schileo ◽  
F. Taddei ◽  
B. Helgason ◽  
F. Pallini ◽  
L. Cristofolini ◽  
...  
Keyword(s):  
Finite Element ◽  
Accurate Prediction ◽  
Finite Element Models ◽  
Long Bones ◽  
Subject Specific

An accurate estimation of bone density improves the accuracy of subject-specific finite element models

2008 ◽  
Vol 41 (11) ◽  
pp. 2483-2491 ◽  
Author(s):  
Enrico Schileo ◽  
Enrico Dall’Ara ◽  
Fulvia Taddei ◽  
Andrea Malandrino ◽  
Tom Schotkamp ◽  
...  
Keyword(s):  
Finite Element ◽  
Bone Density ◽  
Accurate Estimation ◽  
Finite Element Models ◽  
Subject Specific

Image driven subject-specific finite element models of spinal biomechanics

2016 ◽  
Vol 49 (6) ◽  
pp. 919-925 ◽  
Author(s):  
Sahand Zanjani-Pour ◽  
C. Peter Winlove ◽  
Christopher W. Smith ◽  
Judith R. Meakin
Keyword(s):  
Finite Element ◽  
Finite Element Models ◽  
Spinal Biomechanics ◽  
Subject Specific

Subject-specific finite element modelling of canine long bones up to fracture

2013 ◽  
Vol 16 (sup1) ◽  
pp. 270-271
Author(s):  
C. Laurent ◽  
B. Bohme ◽  
V. d'Otreppe ◽  
M. Balligand ◽  
J.-P. Ponthot
Keyword(s):  
Finite Element ◽  
Finite Element Modelling ◽  
Long Bones ◽  
Element Modelling ◽  
Subject Specific
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