B1 Intermediate US 7 Folder Collection
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we're going to talk about the anatomy of the cervical spine or the neck
the neck is relatively simple
this is the front
and of course this is the back of the neck this bone happens to be missing on
the model but probably intact in your neck
the cervical spine is essentially a series of vertebra separated in the
front
by the disc
the disc is the shock absorber it allows impact and it will absorb shock and it allows
motion
in the back of the spine we have these paired joints
these joints
guide the motion of the spine forward and backward and side to side
in the center of the spine
is the spinal cord living in that boney tunnel
and at each level in between the vertebra nerve roots exit and either runs
down your shoulder in arms or runs up the back of your head
and these of course intervene or go to the muscles and the skin and give you
sensation
and give you a position sense and also give you more strength
this is a close-up
of a model of the cervical spine it demonstrates the nerve hole that the
nerve exits out of
you'll see that when you bend backwards that nerve hole actually gets smaller
and when you bend forward that nerve hole gets larger that's important if you
have either a bone spur or a disc herniation you won't want to bring
your neck back because that'll hurt your neck shoulder and arm you want to keep
your head a little bit forward
it also works with lateral bending if you bend away from that side
the nerve hole opens up and if you bend toward that side
the nerve hole gets smaller so lateral bending to the side
will cause more pain
lateral bending away from that side
will cause less pain
another important aspect of the cervical spine is the
spinal canal itself where the spinal cord lives this canal changes in shape
with bending forward and backward and if you'll see when you bend forward the
spinal canal actually enlarges by about thirty percent
and when you bend backwards the spinal canal narrows this is important if the
spinal canal is crowded by a disc herniation or by a bone spur if you happen
to have a blow to the head driving the head backward that can cause compression
of the spinal cord and an injury conversely bending forward tends to open the canal
and relieve the pressure on the spinal cord
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Anatomy and Motion of the Cervical Spine | Neck Conditions | Vail Orthopedic Spine Surgeon

7 Folder Collection
masasama published on June 19, 2020
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