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Cervical
Spine Trauma |
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In
sports medicine football injuries are discussed all of the time.
Football players can injure just about anything while
playing the game. Fortunately,
most things will not cause significant morbidity in the long
run. Even when
dealing with knee ligament tears or severe shoulder problems
that may sideline players for months, they almost always
eventually recover and the injuries generally aren’t life
threatening. Unfortunately
a small percentage of football injuries do leave players
disabled for life. The
vast majority of these injuries involve the cervical spine.
This column has previously focused on “minor” neck
injures treated in the outpatient setting.
But, due to the severity and magnitude of injury, it is
reasonable to discuss the more severe neck injuries even though
they are fairly rare. Lets
begin with a brief review of the anatomy of the cervical spine.
There are seven vertebrae that form the cervical portion
of the vertebral column. There
is a normal curvature of the cervical spine that is not
pathological in most cases.
The
spinal cord begins at a large hole in the bottom of the skull
called the foramen magnum and continues through the neck.
As the cord descends through the neck, it is protected by
the cervical vertebra. At
each level of the C-spine, peripheral nerves come off of the
cord. If
the integrity of the bony C-spine is lost, the protection of the
cord will be lost. Furthermore,
the fractured and/or fragmented bone may in fact injure the
spinal cord. Once the spinal cord is damaged, the possibility exists that
recovery will never come. Thats
not to say that everyone with a C-spine injury or even a
fracture will be quadraplegic, but that possibility exists in
many cases. In
football, the primary mechanism for fracturing the cervical
spine is axial loading. This
means that a force is applied to the top of the head which is
transmitted to the cervical spine.
The result of this force is that a compression fracture.
For this reason, it is extremely important that spearing
be discouraged. Also
in the relm of prevention, we might consider the role of neck
support in football. It
is a common practice to outfit players with neck rolls or cowboy
collars. Although the theoretical advantage of these protective
devices is obvious, it has not been proven that they reduce the
incidence of neck fracture.
Their primary role is in treating the minor neck injury
such as a cervical strain or brachial plexus strain. If
a football player does suffer a neck injury and is being
evaluated by the coaches or trainers on the field, it is vitally
important that the neck not be moved at all.
Recall that if there is a cervical fracture, the
protection of the spinal cord is gone.
Only trained professionals should be responsible for
transporting players with a suspected neck injury to an
emergency department. Also,
unless there is a serious and life-threatening problem that
mandates otherwise, the helmet and shoulder pads should be left
in place. There is good evidence available from several studies that in
the absence of at least three to four trained professionals
acting deliberately and in concert, removal of the helmet and
shoulder pads violates the integrity of the cervical spine. Although
head injury is not the focus of this column, it should be
remembered that anyone who injures their head should be
suspected of having a neck injury as well. In
all cases, any player with a suspected C-spine injury should be
evaluated by trained professionals.
These may be certified athletic trainers, paramedics or
physicians. The
threshold for immobilizion and transport to an emergency
department should be very low. It is important that for all football games that EMS be nearby. It is the custom of most school districts to have an ambulance present at the game site. However, if this is not possible, it is crucial that trained EMS and/or sports medicine personal are on site to manage any emergency situations that arise.
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