Idioma:

Robust QCT/FEA Models of Proximal Femur Stiffness and Fracture Load During a Sideways Fall on the Hip

Dragomir-Daescu, Dan ; Op Den Buijs, Jorn ; McEligot, Sean ; Dai, Yifei ; Entwistle, Rachel C. ; Salas, Christina ; Melton, L. Joseph ; Bennet, Kevin E. ; Khosla, Sundeep ; Amin, Shreyasee

Annals of biomedical engineering, 2011-02, Vol.39 (2), p.742-755 [Periódico revisado por pares]

Boston: Springer US

Texto completo disponível

Citações Citado por

Enviar para

Título:
Robust QCT/FEA Models of Proximal Femur Stiffness and Fracture Load During a Sideways Fall on the Hip
Autor: Dragomir-Daescu, Dan ; Op Den Buijs, Jorn ; McEligot, Sean ; Dai, Yifei ; Entwistle, Rachel C. ; Salas, Christina ; Melton, L. Joseph ; Bennet, Kevin E. ; Khosla, Sundeep ; Amin, Shreyasee
Assuntos: Accidental Falls ; Aged ; Aged, 80 and over ; Biochemistry ; Biological and Medical Physics ; Biomedical and Life Sciences ; Biomedical Engineering and Bioengineering ; Biomedicine ; Biophysics ; Bones ; Cadaver ; Classical Mechanics ; Computer Simulation ; Elastic Modulus ; Female ; Femoral Fractures - etiology ; Femoral Fractures - physiopathology ; Femur ; Femur - injuries ; Femur - physiopathology ; Finite Element Analysis ; Finite element method ; Fracture mechanics ; Humans ; Male ; Mathematical analysis ; Mathematical models ; Middle Aged ; Models, Biological ; Stiffness ; Weight-Bearing
É parte de: Annals of biomedical engineering, 2011-02, Vol.39 (2), p.742-755
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Clinical implementation of quantitative computed tomography-based finite element analysis (QCT/FEA) of proximal femur stiffness and strength to assess the likelihood of proximal femur (hip) fractures requires a unified modeling procedure, consistency in predicting bone mechanical properties, and validation with realistic test data that represent typical hip fractures, specifically, a sideways fall on the hip. We, therefore, used two sets ( n = 9, each) of cadaveric femora with bone densities varying from normal to osteoporotic to build, refine, and validate a new class of QCT/FEA models for hip fracture under loading conditions that simulate a sideways fall on the hip. Convergence requirements of finite element models of the first set of femora led to the creation of a new meshing strategy and a robust process to model proximal femur geometry and material properties from QCT images. We used a second set of femora to cross-validate the model parameters derived from the first set. Refined models were validated experimentally by fracturing femora using specially designed fixtures, load cells, and high speed video capture. CT image reconstructions of fractured femora were created to classify the fractures. The predicted stiffness (cross-validation R 2 = 0.87), fracture load (cross-validation R 2 = 0.85), and fracture patterns (83% agreement) correlated well with experimental data.
Editor: Boston: Springer US
Idioma: Inglês

Links

View this record in MEDLINE/PubMed

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Robust QCT/FEA Models of Proximal Femur Stiffness and Fracture Load During a Sideways Fall on the Hip

Dragomir-Daescu, Dan ; Op Den Buijs, Jorn ; McEligot, Sean ; Dai, Yifei ; Entwistle, Rachel C. ; Salas, Christina ; Melton, L. Joseph ; Bennet, Kevin E. ; Khosla, Sundeep ; Amin, Shreyasee

Boston: Springer US

Buscando em bases de dados remotas. Favor aguardar.