Sources of Subdural Hematoma
The classic hypothesis of a subdural hematoma is
that it results from tearing of the bridging veins7. The
brain slowly atrophies after age of 30. In advanced
age, the atrophied brain adds more tension on the
bridging veins7,8 when a person is in the upright
position because of the gravity. Slight trauma, such
as a fall, add extra stretch or more pulling force on
the bridging veins and causes a tear on the vessel at
the dura-arachnoid junction. This results in bleeding
from the bridging vein and creates a subdural
hematoma3,9,10.