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Avascular necrosis (AVN), also
called osteonecrosis or bone infarction, is
death of bone
tissue due to
interruption of the
blood supply.
Early on, there...
-
cornea of the eye are not
supplied with
blood vessels and are
termed avascular.
There are five
types of
blood vessels: the arteries,
which carry the...
- The
foveal avascular zone (FAZ) is a
region within the
fovea centralis at the
centre of the
retina of the
human eye that is
devoid of
retinal blood vessels...
- femur. Due to the lack of
blood flow, the bone dies (osteonecrosis or
avascular necrosis) and
stops growing. Over time,
healing occurs by new
blood vessels...
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formed The
sequestra are
surrounded by
sclerotic bone
which is
relatively avascular (without a
blood supply).
Within the bone itself, the
haversian canals...
-
Preiser disease, or (idiopathic)
avascular necrosis of the scaphoid, is a rare
condition where ischemia and
necrosis of the
scaphoid bone
occurs without...
- acuity.
Within the
fovea is a
region of 0.5mm
diameter called the
foveal avascular zone (an area
without any
blood vessels). This
allows the
light to be...
-
around 5.5 mm (0.22 in) and is
subdivided into the umbo, foveola,
foveal avascular zone, fovea, parafovea, and
perifovea areas. The
anatomical macula at...
- has
protective functions.
Epithelial layers contain no
blood vessels (
avascular), so they must
receive nourishment via
diffusion of
substances from the...
-
attached to the perichondrium,
which is
richly vascularized to
supply the
avascular cartilage.
Cauliflower ear can also
present in the
setting of nontraumatic...
