Lecture 14: Imaging Extremities Flashcards Preview

Year 1: 04. MSK Exam 2 > Lecture 14: Imaging Extremities > Flashcards

Flashcards in Lecture 14: Imaging Extremities Deck (20)
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1
Q

What is brightened in a T1 image?

A

Fatty areas like the center of bones.

2
Q

What is a SLAP tear?

What can cause one?

A

Superior (glenoid) Labrum Anterior Posterior tear.

Trauma or repetitive use (once again eg: a baseball pitcher)

3
Q

What sign is shown here?

A

Sail Sign

4
Q

What is the difference between intra- and extra- articular fractures of the ulna?

A

Intra-articular fracures involve the articulating surface of the ulna, extra-articular fractures do not.

5
Q

The anterior talofibular ligament is represented here, with a normal image on the left.

What is your diagnosis of the image on the right?

A

Strained anterior talofibular ligament

6
Q

The anterior talofibular ligament is represented here.

What is your diagnosis?

A

Full thicknes tear of the ATF ligament.

7
Q

What are the A’s in the ABC’s of X-Rays?

A

Alignment

Adequacy

8
Q

How would you diagnose this T2 MRI image?

A

SLAP tear

9
Q

What do you call an abnormally large radiolucent sign on the anterior portion of the elbow?

What does it indicate?

A

A “Sail Sign”

In Adults: Radial fracture

In Children, Supracondylar fracture

(Sails are big ARCS, Adult Radial, Child Supracondylar)

10
Q

What is the C of the ABC’s of X-Rays?

A

Cartilage

11
Q

Is the cortex of bone on a T2 MRI high intensity (white) or low intensity (dark grey / black)?

A

Low intensity.

12
Q

What would lipping of the knee joint indicate?

A

Osteoarthritis

13
Q

The anterior talofibular ligament is represented here.

What is your diagnosis?

A

Pseudo band formation at the ATF ligament

14
Q

What is the B in the ABC’s of X-Rays?

A

Bone Cortex

15
Q

What ligament is tested with an anterior drawer test of the ankle?

A

Anterior talofibular ligament

16
Q

What disease can lead to an idiopathic decrease in bloodflow to the head and neck of the femur?

A

Legg-Calve-Perthes

17
Q

The anterior talofibular ligament is represented here.

What is your diagnosis for each?

A

Left: Low grade partial thickness tear of the ATF ligament

Right: High grade partial thickness tear of the ATF ligament

18
Q

What can cause Hill Sachs deformity?

A

Repetitive anterior dislocation of the humerus. 50% to occur on the first dislocation, but becomes more likely as the humerus is dislocated more times

19
Q

Are tendons high or low intensity in a T2 image?

A

Low intensity

20
Q

How would you diagnose this image?

A

Hill-Sachs Deformity