Masterpass MSK Paper 3

Question 1

Bone infarct on bone scan

Answer 1

Diminished uptake acutely, increased later

Question 2

Ossification of patellar ligament associated with

Answer 2

DISH

Question 3

Ollier’s disease

Answer 3

Enchondromatosis, causes cartilaginous rests (round radiolucencies caused by displaced cartilage in bone)

Question 4

Prostate cancer and bone pain, Ix

Answer 4

Radionucleotide whole ody scan

Question 5

Hypertrophic osteoarthropathy caused by

Answer 5

Non-small cell lung Ca, or pulmonary mets

Question 6

Haemochromatosis joint pathology

Answer 6

Chondrocalcinosis

Question 7

Melorheostosis skin findings

Answer 7

Fibrosis of overlying skin

Question 8

Pagets, insufficiency fractures

Answer 8

Fibrous dysplasia

Question 9

Premature arthritis, calcification and loss of disc height

Answer 9

Ochronosis

Question 10

Best Ix to exclude scaphoid fracture

Answer 10

MRI

Question 11

Degenerative change of lateral surface of medial femoral condyle, adolescent

Answer 11

Osteochondritis dissecans

Question 12

Buckle fracture aka

Answer 12

Torus fracture

Question 13

Commonest fracture due to hyperextension injury (rear seat car crash)

Answer 13

L1

Question 14

Commonest nerve injured in anterior shoulder dislocation

Answer 14

Axillary

Question 15

Bony mass causing hyperglycaemia

Answer 15

Chondrosarcoma, then osteosarcoma

Question 16

Well defined lytic lesion in sacrum, no sclerotic margin

Answer 16

Giant Cell Tumour

Question 17

Commonest location for giant cell tumour

Answer 17

Epiphysis

Question 18

5-year survival of metastatic osteosarcoma

Answer 18

10-20%

Question 19

Well defined, expansile lesion in posterior spine

Answer 19

Osteoblastoma

Question 20

Epiphyseal lesion with soap bubble appearance

Answer 20

Chondrosarcoma

Question 21

Double density sign on bone scan

Answer 21

Osteoid osteoma

Question 22

Fibrous dysplasia with intramuscular myxoma

Answer 22

Mazabraud’s syndrome

Question 23

Commonest bone affected by Ewings’

Answer 23

Femur

Question 24

Commonest part of bone affected by Ewings

Answer 24

Metaphyseal and diaphyseal

Question 25

Commonest part of bone affected by Enchondroma

Answer 25

Metaphysis

Question 26

Ix for sacrococcygeal teratoma

Answer 26

AFP

Question 27

RCC mets appearance

Answer 27

Expansile, lytic lesion

Question 28

Commonest location for spinal astrocytomas

Answer 28

Thoracic spine

Question 29

Bowed PCL on MRI

Answer 29

ACL tear

Question 30

Commonest location for enchondromas

Answer 30

Metacarpals

Question 31

Cancer risk of haemochromatosis

Answer 31

Hepatoma

Question 32

Best Ix to exclude occult stress fractue

Answer 32

Triple phase MDP bone scan