Masterpass Module 2 Paper 3

Question 1

Bone infarct imaging

Answer 1

Reduced uptake on bone marrow scan with increased uptake once collateral circulation established

Question 2

Features of DISH

Answer 2

Flowing osteophytes,
Patellar ligament ossification,
Heel spurs,
Whiskering of iliac crest

Question 3

Best imaging for ?prostate ca mets

Answer 3

Whole body bone scan

Question 4

Causes of Looser zones

Answer 4

Osteomalacia,
Osteogenesis imperfects,
Fibrous dysplasia,
Pagets

Question 5

Talocalcaneal coalition affects which facet

Answer 5

Middle facet

Question 6

Best Ix to r/o urethral trauma (stable pt)

Answer 6

Retrograde urethrogram

Question 7

Best Ix to r/o scaphoid #

Answer 7

MRI within 24h

Question 8

Solid organ injury sensitivity on FAST

Answer 8

40%

Question 9

Chance fracture features

Answer 9

Hyperflexion-distraction injury (rear-seat passenger, lap seat belt).
Horizontal fracture through pedicles.
Commonest at L1

Question 10

Hyperglycaemia from bone tumour

Answer 10

85% of chondrosarcoma.
25% of osteosarcoma.
(Paraneoplastic)

Question 11

GCT common locations

Answer 11

Most occur in long bones.
Sacrum 4x more common than spine.
Most common in epiphysis with occasional expansion into metaphysis

Question 12

5-year survival of osteosarcoma with lunt met

Answer 12

10-20%

Question 13

Common locations for Ewings

Answer 13

Femur > Ilium > Tibia > Humerus > Fibula > Sacrum > Ribs
Metaphysis and diaphysis (Half in metadiaphysis)

Question 14

Common location for enchondromas

Answer 14

Metaphysis

Question 15

Tumour marker for Sacrococcygeal teratoma

Answer 15

AFP

Question 16

ACL tear - associated MRI features

Answer 16

Bowing of PCL due to posterior translation of femur on tibia

Question 17

Haemochromatosis - commonly associated malignancy

Answer 17

Hepatoma

Question 18

Progeria

Answer 18

AR,
Absence of adolescent growth spurt and beginning of premature ageing