4. Cervical Spine Flashcards

1
Q

what are the features in the odontoid view

A

lateral masses of C1 on each side of the odontoid peg

odontoid peg of C2 in the middle

distance between the odontoid peg and lateral masses should be equidistant

lateral masses of C1 and C2 aligned

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2
Q

what are the 4 lines of the spine used to check alignment

from anterior to posterior

A

anterior vertebral line
posterior vertebral line
spinolaminar line
posterior spinous line

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3
Q

what is a retropharyngeal infection

A

massive soft tissue space between bone and airway

pocket of pus

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4
Q

what is DISH

A

abnormal calcification/bone formation of soft tissues surrounding the spinal joints and also the peripheral/appendicular skeleton

bone formation along the anterior longitudinal ligament and or the posterior ligament as well

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5
Q

what might happen in DISH to the adjacent spinal levels

A

fuse

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6
Q

what is the most common spine that is affected by DISH

A

thoracic

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7
Q

what is ankylosing spondylitis

A

systemic disorder

inflammation of axial skeleton

accentuated kyphosis

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8
Q

what is the characteristic of AS on images

A

bamboo spine

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9
Q

what is a jefferson fracture

A

compression fracture of C1 bony ring

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10
Q

what can be seen on the image for a jefferson fracture

A

lateral masses split and transverse ligament tear

displacement of the lateral masses of C1 beyond the margins of C2 body

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11
Q

what is a bilateral facet joint dislocation

A

more than 1/2 of vertebrae has displaced

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12
Q

what is a teardrop fracture

A

post ligament disruption and anterior compression of vertebrae

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13
Q

what are the 3 radiographic features of the teardrop fracture

A

prevertebral teardrop fragment (avulsion fracture)

posterior portion of vertebrae may be displaced into the spinal canal

spinal cord may be compressed

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14
Q

what is a hangmans fracture

A

fracture through the pars interarticualris of C2

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15
Q

what is the mechanism of a hangmans fracture

A

hyperextension of neck

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16
Q

what is the mechanism of a teardrop fracture

A

hyperflexion and compression

17
Q

what is the mechanism of a jeffersons fracture

A

axial blow to the head

18
Q

what are the 3 radiographic features of the hangmans fracture

A

prevertebral soft tissue swelling

avulsion of anterior inferior corner of C2

rupture of anterior longitudinal ligament

anterior dislocation of the C2 vertebral body

bilateral C2 pars interarticularis fractures

19
Q

what is the trauma fell off a horse injury

A

metastatic wedge fracture

fragment of fracture goes into spinal cord