C Spine Flashcards

1
Q

Canadian C spine rules

A
  • Dangerous mechanism
  • > 65 +, extremity paresthesia
  • Unable to rotation head 45º both ways
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Best view for C1C2

A

Odontoid - open mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Best view for C7-T2

A

Swimmers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Anterior Antlantodental Interval (AADI)

A
  • Lateral view distance between anterior tubercle and dens
  • > 2.5mm = instability
  • Need Flex or ext lateral views
  • Cause = trauma, down syndrome, AS, RA, psoriatic arthritis, Reiter Syndrome
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

George Line

A
  • Lateral view = smooth curve
  • Posterior Vertebral bodies should connect
  • Flex/Ext views helpful
  • Determines anterolisthesis/retrolisthesis
    o Laxity from Fx, dislocation, ligament laxity, DJD
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Cervical gravity line

A
  • Line from apex to dens

- Should pass 7th cervical vert

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Paravertebral soft tissue

A
  • C2-4 should not be >7mm in neutral
  • C5-7 should not be >20mm
  • Shows soft tissue mass, hematoma, neoplasm
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Spinal fractures

A
  • Most common C1-2, C5-7, T9-L2
  • Trauma mostly from MVA
  • If CT head then CT spine at the same time
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

C spine signs of instability

A
  • Displacement of vertebrae
  • Widening of spaces/facet joints
  • Widening/elongation of canal
  • Disruption of posterior vertebral line
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Jeffersons Fx

A
  • Burst Fx ox C1
  • MOA blow to vertex of head
  • Bilateral fx anterior/posterior arches of C1 + transverse ligament distruption
  • View: Open mouth /ondontoid
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Ondontoid Fx

A
  • Fx of ondontoid process C2
  • MOI: Hyperflexion injuries
  • Based on stability
  • 1 = stable
  • 2 = unstable
  • 3 = stable
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Hangman’s fx

A
  • Fx posterior aspects of C2
  • MOI: Hyperextension MVA
  • Bilateral fx through pedicles of C2
  • Spinal cord compromise
  • 1 = fx through C2 pedicle, extend between superior and inferior facets
  • 2 = Concomitant disruption of C2-3 IVD
  • 3 = injury with C2-3 dislocation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Teardrop Fx

A
  • Avulsion of anterior vertebral body with posterior subluxation
  • Most severe and unstable cervical injury
  • Posterior displacement of vertebra into spinal canal, fx of posterior elements, disruption of soft tissues
  • ALL tear = leaves fragment
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Clay shoveler’s Fx

A
  • Fx spinous process of C6 7 T1 T2 (can be one)

- MOI: flexion injury – clayminers, manual labor or weightlifting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly