The Finite Element Analysis of Osteoporotic Lumbar Vertebral Body by Influence of Trabecular Bone Apparent Density and Thickness of Cortical Shell
- Resource Type
- Authors
- Algirdas Maknickas; Rimantas Kačianauskas; Oleg Ardatov; Marija Tamulaitienė; Vidmantas Alekna
- Source
- Acta Mechanica et Automatica, Vol 11, Iss 4, Pp 285-292 (2017)
- Subject
- Apparent density
Materials science
0206 medical engineering
Osteoporosis
finite element method
02 engineering and technology
Lumbar vertebrae
03 medical and health sciences
0302 clinical medicine
medicine
bone tissue elasticity
Mechanical Engineering
Mechanics of engineering. Applied mechanics
Anatomy
TA349-359
Cortical shell
medicine.disease
lumbar vertebrae
020601 biomedical engineering
osteoporosis
Finite element method
Lumbar vertebral body
Trabecular bone
medicine.anatomical_structure
Control and Systems Engineering
030217 neurology & neurosurgery
- Language
- English
- ISSN
- 2300-5319
Osteoporosis causes the bone mass loss and increased fracture risk. This paper presents the modelling of osteoporotic human lumbar vertebrae L1 by employing finite elements method (FEM). The isolated inhomogeneous vertebral body is composed by cortical out-er shell and cancellous bone. The level of osteoporotic contribution is characterised by reducing the thickness of cortical shell and elasticity modulus of cancellous bone using power-law dependence with apparent density. The strength parameters are evaluated on the basis of von Mises-Hencky yield criterion. Parametric study of osteoporotic degradation contains the static and nonlinear dynamic analysis of stresses that occur due to physiological load. Results of our investigation are presented in terms of nonlinear interdependence between stress and external load.