MSK

Question 1

What are the features of Mazabraud syndrome?

Answer 1

1. Fibrous dysplasia (mostly polyostotic)

2. Soft tissue myxomas

Question 2

What are the features of McCune Albright syndrome?

Answer 2

1. Polyostotic fibrous dysplasia
2. Cafe-au-lait spots (coast of Maine)
3. Endocrine disturbance (precocious puberty)

Question 3

What are the XR features of a chronic rotator cuff tear?

Answer 3

1. High riding humerus (subacromial space <6mm)

2. Sclerosis and irregularity undersurface acromion, remodelling - concave

Question 4

What are the secondary signs of a full thickness supraspinatus tear?

Answer 4

1. Subacromial-subdeltoid fluid
2. Retraction of supraspinatus muscle
3. Changes in subacromial-subdeltoid fat
4. Fatty atrophy of muslce

Question 5

What are the associations of a Segond fracture?

Answer 5

ACL tear (75-100%)
Medial and lateral meniscus tear (66-70&)

Question 6

Which MSK masses have a fluid-fluid level?

Answer 6

Benign: ABC
GCT
SBC
Chondroblastoma
Cystic degeneration in FD
Hemangioma (if large - low flow channels)
Malignant: Telangiectatic OSA
Tumor necrosis
Hemorrhage in tumor
Other: Hematoma

Question 7

What is the mean age for a parosteal sarcoma?

Answer 7

20-50 y

Older than conventional OSA