Muscloskeletal Radiology Slides

Question 1

Side (sagittal) + Frontal (coronal) view of:

Answer 1

Normal Right Shoulder

& Rotator cuff

Question 2

Sagittal + Coronal (front) view of:

Answer 2

Right shoulder with rotator cuff tear

(in supraspinatus tendon)

• • white area above humeral head = fluid resulting from rotator cuff tear*
• • black structure next to humeral head (@2 o’clock) = retracted end of torn supraspinatus tendon*

Question 3

What is injured in this MRI?

Answer 3

SLAP tear: Superior Labrum Anterior & Posterior

• Labrum: a ring of fibrocartilage (fibrous cartilage) around the edge of the articular (joint) surface of a bone

Question 4

What type of tumor is this?

What is the defining feature?

Answer 4

osteosarcoma of proximal humerous

feature: :moth-eaten” edges

Question 5

What type of dislocation is shown?

Is this common?

Answer 5

anterior dislocation

of humerous (resides in front of glenoid)

• common

Question 6

What type of dislocation is shown?

Is this common?

Answer 6

Posterior dislocation, humerus

(head resides behind glenoid fossa)

• rare

Question 7

What injury is shown?

Answer 7

humeral fracture

(neck of humerous)

Question 8

What type of fracture is this?

What nerve could be damaged?

Answer 8

Midshaft humeral fracture

• radial nerve

Question 9

What type of fracture is this?

What 2 types of this fracture can occur?

Answer 9

distal humeral fracture (condylar)

• can be supracondylar or condylar

Question 10

What type of elbow dislocation is this?

What are all the possible types?

Answer 10

posterior elbow dislocation

• posterior
• anterior
• lateral
• medial
• divergent

Question 11

What is this injury know as?

What does it consist of?

Answer 11

Terrible Triad

• elbow dislocation
• radial head fracture
• coronoid fracture

Question 12

What 2 types of MRI imaging are seen here?

Answer 12

left: T1
right: T2

Question 13

What type of fracture is this?

Answer 13

metaphyseal fracture

(does NOT effect growth plate)

Question 14

What type of fracture is this?

Answer 14

Torus or “buckle” fracture

• topmost layer of bone on one side of the bone is compressed, causing the other side to bend away from the growth plate

Question 15

What type of fracture is this?

Answer 15

Greenstick

• one bone fractures causing the other to bend

Question 16

This type of fracture is common in the arms of children:

(fracture in ulna; radius is dislocated)

Answer 16

Monteggia fracture

Question 17

This type of fracture is common in the arms of children:

(fracture in radius; ulna is dislocated)

Answer 17

Galeazzi fracture

Question 18

This fracture occurs across or at the growth plate:

Answer 18

Salter fractures or Physeal fracture

Question 19

In these 2 wrist fractures the wrist bone slides over or under the ulna + radius. Identify the fractures in the top and bottom images.

Answer 19

top: Colles (wrist = over)
bottom: Smith (wrist = under)

Question 20

Name this fracture fo the 5th metacarpal bone:

Answer 20

Boxer Fracture

Question 21

This fracture causes Pain in the snuffbox:

Answer 21

Scaphoid fracture

Question 22

This is a stable type of pelvis fracture:

Answer 22

acetablar fracture

Question 23

This is a penis…I mean..uh.. unstable type of pelvic fracture:

Answer 23

Open book

Question 24

What is wrong in this image?

Answer 24

Posterior hip dislocation

Question 25

MRI: Throcanteric Bursitis

Answer 25

Avascular Necrosis

Question 26

Congenital hip dislocation Developmental Hip Dysplasia (DDH)

Answer 26

CT image of a sarcoma originating from the muscles of the inner thigh

Question 27

What are the red arrows indicating?

Answer 27

Exostosis (formation of new bone on top of existing bone)

Question 28

What does this ultrasound show?

Answer 28

**Deep Vein Thrombosis** of the common femoral vein

Question 29

Where is this anyerism located?

Answer 29

**popliteal artery** (in lower limb) •Risk of complications: –Thrombosis ===high –Emboli ===high –Rupture===low