Concussion
of the brain is a rotational injury
caused by sudden acceleration.
·
As
seen in autopsy it occurs when the head is free to move with sufficient
velocity, but not when it is fixed. It is more commonly known as ‘stunning ‘,
and may be produced by direct violence on the vertex, by indirect violence as a
result of a violent fall upon the feet from height, or by an unexpected fall on
the ground, when pushed forcibly in any traffic accident or an injury received
in industry.
·
The
impact on hollow structures of skull is propagated by radiating waves of motion
along with the site of impact and coverage as they approach the opposite pole
giving rise at the point of collision to a contralateral or countercoup injury.
·
The
contusion and laceration of brain occurs due to the traction as the brain is
torn away from its covering by the force of its own momentum. Application of a
blow to the movable head is followed by a positive pressure in the area of
brain underlying the zone of impact and by a negative pressure over the
contralateral brain surface where the brain pulls away from the skull.
·
The
injuries of the brain heal by forming adhesions and may later cause secondary
epilepsy.
No comments:
Post a Comment