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Diagnostic Imaging > Lumbar spine > Flashcards

Lumbar spine Flashcards

1
Q

What z joints will you see during L posterior oblique views? R posterior oblique views?

A

LPO - L z joints

RPO - R z joints

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2
Q

What z joints will you see during R anterior oblique views? L anterior oblique views?

A

RAO - L z joint

LAO - R z joint

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3
Q

nose of scotty dog

A

transverse process

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4
Q

ear of scotty dog

A

superior articular process on the side we are looking at

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5
Q

front leg of scotty dog

A

inferior articular process on the side we are looking at

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6
Q

tail of scotty dog

A

superior articular process on the other side of view

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7
Q

lower leg of scotty dog

A

interior articular process on the other side of view

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8
Q

collar of scotty dog (if present)

A

= spondylolysis

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9
Q

eye of scotty dog

A

pedicle

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10
Q

dogs body of scotty dog

A

lamina

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11
Q

What is normal Barge’s angle?

A

~53 deg

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12
Q

What is normal Ferguson’s angle?

A

~41 deg

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13
Q

What is the best view of the SI joint?

A

R and L oblique views

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14
Q

suspected spine trauma - initial imaging for adult over 16 after blunt trauma who meets criteria for thoracic and lumbar imaging

A
  • CT thoracic and lumbar
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15
Q

Suspected spine trauma - suggested criteria for imaging of thoracolumbar spine

A
  • signs of injuries - visual cues or tenderness
  • neuro issues
  • ED outcomes - GCS < 15, major distracting injury, intoxication
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16
Q

suspected spine trauma - next imaging study for adult over 16 w/ acute thoracic or lumbar spine injury detected on radiographs or noncontrast CT, neurological abnormalities

A

MRI

17
Q

suspected spine trauma - initial imaging for child under 16, suspected thoracolumbar spine trauma

A

radiography thoracic and lumbar spine

18
Q

LBP - initial imaging for acute low back pain w/ or w/o radiculopathy, no red flags, no prior management

A

imaging is not appropriate

19
Q

LBP - initial imaging for subacute or chronic LBP w/ or w/o radiculopathy, no red flags, no prior management

A

imaging is not appropriate

20
Q

red flags for cancer or infection as cause of LBP

A
  • hx of cancer
  • unexplained weight loss
  • immunosuppression
  • urinary infection
  • intravenous drug use
  • prolonged use of corticosteroids
  • back pain not improved w/ conservative management
21
Q

red flags for spinal fx as cause of LBP

A
  • hx of significant trauma
  • minor fall or heavy lift in a potentially osteoporotic or elderly individual
  • prolonged use of steroids
22
Q

red flags for cauda equina or other severe neurologic conditions of LBP

A
  • acute onset of urinary retention or overflow incontinence
  • loss of anal sphincter tone or fecal incontinence
  • saddle anesthesia
  • bilateral or progressive weakness in the lower limbs
23
Q

LBP - inital imaging for subacute or chronic LBP w/ or w/o radiculopathy, surgery or intervention candidate w/ progressive symptoms during or following 6 weeks of optimal medical management

A

MRI

24
Q

LBP - initial imaging for LBP w/ suspected cauda equina syndrome

A

MRI

25
Q

LBP - initial imaging for LBP w/ hx of prior lumbar surgery and w/ or w/o radiculopathy, new or progressing symptoms or clinical findings

A
  • radiography lumbar spine
  • MRI
26
Q

LBP - initial imaging for LBP w/ or w/o radiculopathy, one or more of the following: low-velocity trauma, osteoporosis, elderly individual, or chronic steroid use

A
  • radiography lumbar spine
  • MRI
  • CT lumbar
27
Q

LBP - inital imaging for LBP w/ or w/o radiculopathy, one or more of the following: suspicion of cancer, infection, or immunosuppression

A

MRI

28
Q

Child back pain - initial imaging for child w/o red flags: NO to constant pain, night pain, radicular pain, pain lasting > 4 weeks, abnormal neuro exam

A

no imaging appropriate

29
Q

Child back pain - initial imaging for child w/ back pain and 1 or more red flags: YES to constant pain, night pain, radicular pain, pain lasting > 4 weeks, abnormal neuro exam

A
  • x-ray spine area of interest (BEST - usually appropriate)
  • MRI (may be appropriate)

Diagnostic Imaging (11 decks)

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