A micro-macro evaluation of the vertebral bony endplate permeability based on computational fluid dynamics
Visualitza/Obre
Estadístiques de LA Referencia / Recolecta
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/18167
Tipus de documentText en actes de congrés
Data publicació2011
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
The intrinsic permeability is an important parameter that
describes the resistance
of a porous structure
to fluid flo
w. It
has a key role in poroelastic finite element models of spinal
segments, especially at the
vertebral endplate, i.e. the
interface
between intervertebral disc and vertebra. In the understanding
of the properties of the complex endplate system, an expli
cit
evaluation for permeability of subchondral bone is missing.
Thus, a
new method
wa
s
proposed to evaluate the intrinsic
permeability of the bony endplate.
CT
-
based reconstruction
s
of the bony endplate from a lumbar vertebra were analyzed
using computational fluid dynamics
, and
the i
ntrinsic
permeability and porosity
of the structure
were calculated.
Results showed that
the
permeability
did
not depend on
the
fluid flow direction,
and was statistically similar for both the
superior and inferior endplates
. Permeability values varied
within the range of trabecular bone, while porosity
values
w
ere
lower than trabecular bone characteristic values.
Finally,
i
ntrins
ic permeability correlated well with porosity
through the
Kozeny
-
Karman model, which
offer
s
perspectives for
parametric studies involving degenerative or age
-
related
changes at the disc
-
bone interface.
CitacióMalandrino, A. [et al.]. A micro-macro evaluation of the vertebral bony endplate permeability based on computational fluid dynamics. A: International Society of Biomechanics (ISB). Congress. "Proceedings of the XXIIIrd Congress of the International Society of Biomechanics (ISB)". Brussels: 2011.
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
Malandrino et a ... ational fluid dynamics.pdf | Abstract | 68,98Kb | Visualitza/Obre |