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DI > DI Quiz 3 > Flashcards

DI Quiz 3 Flashcards

1
Q

Articular processes

A
  • dorsally located
  • diarthrodial joint
  • commonly develop rad signs of DJD
  • Cause back pain?
    • maybe, uncommon
    • Cervical spondylomyelopathy
      • neural compression as osteophytes impinge on vertebral canal
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2
Q

Degenerative joint disease present?

A

A!

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3
Q

DJD present?

A

A

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4
Q

DJD present?

A

A, B, C

not painful

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5
Q

Cauda Equina Syndrome affects which vertebrae?

A
  • L7-S1
    • chronic instability, spondylosis, disc protrusion, stenosis of vertebral canal
  • leads to nerve root impingement
  • very common problem
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6
Q

Cauda Equina Syndrome Clinical signs

A
  • Most common is LS pain
    • decreased willingness to jump & climb stairs
    • low tail carriage
    • reduced tail wagging
    • difficulty posturing to defecate

primarily big dogs

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7
Q

Where does the spinal cord end?

A

around L5

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8
Q

Cauda Equina Syndrome predisposed by

A

LS transitional vertebra

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9
Q

Radiographs are not diagnostic but can sometimes show…

A

Stenosis

(need CT or MRI)

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10
Q

Treatment for cauda equina syndrome

A
  • Pain only
    • NSAIDS
    • weight reduction
    • epidural steroid injections
  • Unresponsive pain +/- deficits
    • surgery- dorsal laminectomy
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11
Q

What are the arrows pointing out?

A

endplate lysis

discospondylitis- inflam of disc and spine

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12
Q

What is the hallmark radiographic sign of discospondylitis?

A

endplate lysis

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13
Q

Discospondylitis is an infection of….

A
  • infection of disc with involvement of adjacent endplates
  • usually bacterial
    • staph
    • gram neg or brucella canis
  • hematogenous spread
    • UTI- do urine & blood culture
  • back pain
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14
Q

Wobbler Disease

A
  • need MRI, rads can be suggestive
  • progressive cervical myelopathy
  • two forms
    • disc associated compression (doberman 7yrs)
    • osseous associated compression (great dane 4yr)
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15
Q

Chihuahua, Male, 2 yrs

progressive teraparesis and ataxia

signs present for several weeks

dog has always been clumsy, but has deteriorated

Physical findings: tetraparetic gait, barely ambulatory, spasticity of thoracic limbs, postural reactions decreased in all 4 legs

Where is the lesion?

A

classical cervical sign

  • malalignment b/t C1 and C2
  • no visible dens
  • no VD view
  • diagnosis: atlantoaxial subluxation
  • expensive surgery can correc this
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16
Q

Atlantoaxial subluxation

A
  • trauma can cause in any breed
  • congenital predisposition in toy breeds
  • there may be an underlying ligament abnormality
  • increased distance b/t C1 and C2
    • lamina are not parellel
    • dens may be small or missing
  • best visualized on lateral view
  • be careful when positioning dog
17
Q

What is the abnormality?

A

Atlantoaxial subluxation

18
Q

What is the abnormality?

A

Atlantoaxial subluxation

19
Q

Hemivertebra

A
  • common in brachycephalic dogs
  • cannot assess significance from survey radiographs
  • may not be causing CS
  • best assessed with MRI
  • vertebrae are shaped like a butterfly
20
Q

What is the spinal abnormality?

A

Hemivertebra

(boston terriers, pugs)

21
Q

What is the spinal abnormality?

A

Hemivertebra

22
Q

Scintigraphy

A
  • screens for increased or decreased bone metabolic activity “bone scan”
  • “soft tissue scan” where hot spots of increased activity are attributed to areas of greater blood supply and inflammation
23
Q

What kind of scan is this and what are we looking for?

A

scintigraphy

hot spots

24
Q

How many views are required for equine joints?

A

four views bc of the complexity of equine joints

lateromedial

dorsopalmar (plantar)

DMPLO

DLPMO

25
Q

Name the view

A

Dorsopalmar

26
Q

Name the view

A

Lateromedial

27
Q

Name the view

A

DMPLO

dosal lateral

medial palmar

28
Q

Name the view

A

DLPMO

dorsal medial

lateral palmar

29
Q
A

carpus

30
Q
A

DM

31
Q

When obtaining images of the distal extremity in a horse, what 3 things help with technical quality?

A

remove shoes

clean lateral sulci

pack with a moldable material (fill it so you dont have artifacts)

32
Q

What joint is the most commonly affected in horses with hind limb lameness?

A

tarsus

the lateral trochlear ridge can be identified by the large notch at its distal aspect

medial trochlear ridge can have variable appearances

33
Q

Osteochondrosis (OCD)

A
  • common in tarsocrural joint, often bilateral
  • most common location:
    • Intermediate ridge of the distal tibia (DIRT)- seen best on the DMPLO view
    • lateral trochlear ridge of talus
    • medial ridge also affected
  • fragments can settle far at the bottom of the joint
34
Q

What is the red circle indicating?

A

osteochondrosis (OCD)

35
Q

What is the most common cause of lameness associated with tarsus?

A

DJD- degenerative joint dz

36
Q

DJD- Degenerative Joint Disease

A

periarticular osteophyte formation is the most common finding

advanced disease may have subchondral bone lysis and narrowing of the joint space

37
Q

What is the abnormality?

A

DJD- degenerative joint dz

38
Q
A
39
Q
A

DI (6 decks)

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