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Flashcards in Imaging Deck (40)
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1
Q

Best view for Spondylolyis?

What are you looking for?

A

Oblique view

Scottie Dog

2
Q

Best view for Spondylolistesis?

A

Static view: Lateral

Dynamic: Flexion/Extension

3
Q

Best view for Dens fracture?

A

XRay:Open mouth odontoid view and lateral C-spine

CT: Sagittal reconstructions most sensitive

4
Q

Rib Fracture

A

XRay: Difficult to detect

Bone Scan: Most sensitive

5
Q

Best view for lower cervical spine fracture?

A

Swimmer’s view

6
Q

Best view for clavicle fracture?

A

Preferred study: 10 degrees cephalic tilt

7
Q

Glenoid Fracture?

A

Bony Bankart: West Point Axillary

8
Q

Scapular fractures

A

CT is most helpful

9
Q

Best view for subacromial impingement

A

Scapular outlet view

10
Q

AC Joint Separation

A

Bilateral AP XRays with both shoulders on same plane

11
Q

Hill-Sachs Lesion

A

Preferred study: Stryker notch view & Axillary lateral view

12
Q

Anterior humeral dislocation

A

Best: Axillary lateral view

Followed by: Scapular Y lateral view

13
Q

Posterior humeral dislocation

A

AP and scapular Y views

*can be deceptive

14
Q

Elbow fractures

A

XRays: AP/Lateral/Oblique of elbow

15
Q

Wrist: Colles fracture

A

XRay: dinner fork deformity

16
Q

Wrist: Smith fracture

A

XRay: AP/Lat/Obilique of wrist

17
Q

Hand: lunate dislocation

A

Oblique/AP/Lateral views

18
Q

Scaphoid fracture

A

AP/Lat/Oblique - may be negative initially

  • repeat XRays in 10 days
  • MRI can detect occult fracture
19
Q

Hamate fracture

A

Most sensitive: Carpal tunnel view

*CT can be helpful

20
Q

Pelvic fracture

A

XRays: AP/Inlet/Outlet

CT: most sensitive

21
Q

Acetabular fracture

A

Judet views: AP/iliac/obturator view

CT: for complex fractures

22
Q

Hip fracture or dislocation

A

AP/ cross table lateral

23
Q

Patellar fracture

A

XRay: AP/lateral/sunrise

Lateral view most helpful

24
Q

Patellar subluxation

A

Sunrise or merchant view

25
Q

Tibial plateau fracture

A

XRay: AP/lateral/15 degree tilt oblique

*CT for operative planning

26
Q

Osgood Schlatter’s

A

AP/Lateral

Lateral will show fragmentation of apophysis

27
Q

Stress fracture (shin splints)

A

AP/Lateral

Lateral will demo cortical reaction in severe fracture

MRI: most sensitive
Bone Scan: helpful

28
Q

Ankle Instability

A

Xray: AP/Lateral/Mortise; Stress Views

29
Q

Jones fracture

A

Oblique View of the foot

MRI & Bone Scan utilized

30
Q

Most common type of Salter Harris fracture types?

A

Type II

31
Q

Ottawa Ankle Rules

A

Unable to walk 4 steps immediately or in ER

IF Ankle pain present

Tenderness over the posterior 6cm of lateral or medial mallelous

AND/OR

IF Midfoot pain is present

Tenderness over the navicular or base of the 5th metatarsal

32
Q

Ottawa Knee Rules

A

Age >55 OR

Isolated tenderness of the patella

OR

Tenderness of head of fibula

OR

Inability to flex knee to 90 degrees

OR

Unable to bear weight immediately or in the ER

33
Q

Canadian C-Spine Rules: High Risk Factors

A

Age >65 years old

OR

Dangerous mechanism

  • fall from elevation greater than 3 feet or 5 stairs
  • Axial load to the head
  • MVC high speed (>100 km/hour)
  • Motorized rec vechiles
  • Bicycle struck or collison

OR

Paresthesias in extremities

34
Q

What sign on XRay would you see in an elbow fracture?

A

Fat Pad displacement

  • displacement of any of the fat pads may indicate an occult fracture
  • displacement of the posterior olecranon pad is almost always associated with a fracture
  • typically radial head fracture in adults & intracondylar fracture in children
35
Q

Segond fracture

A
  • avulsion fracture of the lateral tibia condyle

- sometimes seen on XRay after an ACL injury

36
Q

What zone of a proximal 5th metatarsal is at risk for non-union?

A

Zone 2
Treatment:
- cast immobilization for 6-8 weeks OR
-Early fixation in some athletes

37
Q

What imaging is recommended for a SLAP lesion?

A

MR Arthrogram

38
Q

What images make a complete trauma series for shoulder dislocations?

A
  • True AP
  • Scapular Y
  • Axillary

Also helpful:

  • Stryker view: shows hill sachs lesion
  • West Point view: shows glenoid bone loss
39
Q

After an ACL injury: what may you see on XRay?

A
  • notch width index
  • Osteochondral fracture
  • Segond fracture
  • Bone bruise (MRI)
    • most common site is over the lateral femoral condyle
40
Q

Best XRay view of syndesmotic ankle sprain

A

Mortise view in unilateral stance