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Di Imaging II > Exam I > Flashcards

Exam I Flashcards

1
Q

Hyperflexion Injuries

A
  • simple wedge compression fx
  • bilateral facet dislocation
  • flexion teardrop fx
  • clay shoveler’s fx
  • anterior subluxation
  • dens fx
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2
Q

Hyperflexion + rotation injuries

A
  • unilateral facet dislocation

- unilateral facet fx-dislocation

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3
Q

Hyperextension injuries

A
  • C1 posterior arch fx
  • dens fx
  • hangman’s fx
  • C1 anterior tubercle avulsion
  • hyperextension fx-dislocation
  • hyperextension dislocation
  • extension teardrop fx
  • lamina fx
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4
Q

Hyperextension + rotation injuries

A
  • pillar fx

- pedicolaminar fx

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5
Q

Vertical compression injuries

A
  • jefferson’s fx of C1

- bursting fx of lower cervicals

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6
Q

Lateral flexion injuries

A
  • TVP fx
  • uncinate fx
  • unilateral fx lateral mass C1
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7
Q

MC areas of spinal trauma

A

C1-C2
C5-C7
T12-L1

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8
Q

Davis Series

A
  • lateral
  • APOM
  • AP cervical
  • Lt & Rt obliques
  • flexion/extension
  • swimmers
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9
Q

What makes a fx unstable?

A

if more than one column or the middle column is involved and/or neurologically compromised

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10
Q

How long does it take spinal fractures to heal?

A

3-6 months

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11
Q

Body fractures heal more with ___?

A

fibrosis

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12
Q

Arch fractures heal more with ___?

A

callus

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13
Q

What is the MC fracture of atlas?

A

posterior arch fx, usually bilateral and vertical

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14
Q

What is a Jefferson’s fx?

A
  • bursting fx of C1

- bilateral fx of posterior and anterior arch

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15
Q

What dictates a Jefferson’s fx unstable?

A

if the lateral mass offset is >7mm

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16
Q

What view is best to fully evaluate the ADI?

A

flexion

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17
Q

What is the MC type of odontoid fx?

A

type II (high dens)

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18
Q

What is one finding found in type III odontoid fxs?

A

disruption of Harris’ ring

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19
Q

Until what age is an os terminale present?

A

age 12

20
Q

Why are type II odontoid fxs more common?

A

due to the decreased amount of trabeculation at the base of the dens

21
Q

What are some findings present with a NEW compression fx?

A
  • line of impactin
  • step defect
  • fx line
  • blurry or hazy endplates
22
Q

How does a new compression fx show up on a T1 and T2 MRI?

A

dark on T1

bright on T2

23
Q

What are some findings of a lower cervical burst fracture?

A
  • large anterior fragment

- retropulsion of posterior fragment

24
Q

Bow tie sign is seen in ___?

A

unilateral facet dislocation

25
Q

Where are bilateral facet dislocations MC seen at?

A

C4-C7

26
Q

What is the most severe injury of the cervical spine?

A

flexion teardrop fx

27
Q

What differentiates a flexion teardrop fx from a burst fx?

A

facet dislocation seen in flexion teardrop fx

28
Q

What segments are Clay Shoveler’s Fractures seen at?

A

C6, C7, T1

29
Q

Where do most T/L fxs occur?

A

T11-L2

30
Q

What type of fx is the MC in T/L region?

A

compression

31
Q

What are three possible etiologies of a pathological compression fx?

A

osteoporosis
lytic mets
multiple myeloma

32
Q

Where are Chance fxs MC seen?

A

L1-L3

33
Q

What is a finding associated with Chance fxs?

A

empty vertebra sign

ghost vertebra sign

34
Q

What is Chance fx?

A

horizontal splitting of arch and body

35
Q

What is the second MC lumbar fx?

A

TVP fx

36
Q

Where are TVP fxs MC seen?

A

L2 & L3

37
Q

Muscle associated with ASIS avulsion fx

A

sartorius

38
Q

Muscle associated with AIIS avulsion fx

A

rectus femoris

39
Q

Muscle associated with ischial tuberosity avulsion fx

A

hamstrings

40
Q

Muscle associated with lesser trochanter avulsion fx

A

iliopsoas

41
Q

What is a Duverney fx?

A

iliac wing fx

42
Q

What is the MC fx of the pelvis?

A

ischiopubic rami fx

43
Q

What is a Malgaigne fx?

A

superior and inferior pubic rami fx with a fx or dislocation of SI on the SAME side

44
Q

What is a Bucket-Handle fx?

A

superior and inferior pubic rami fx with a fx or dislocation of SI on the OPPOSITE side

45
Q

What is a Straddle fx?

A

bilateral superior and inferior pubic rami fx

46
Q

What is a Sprung fx?

A

diastasis of pubic symphysis and one or both SI joints

Di Imaging II (2 decks)

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