MSK

Question 1

Ivory Vetebra (Adult)

Answer 1

Osteoblastic met - Prostate/Breast
TB Spondylitis
Lymphona (HL)
Pagets (+expansion)

Rare- sarcoid, mastocytosis

Question 2

Primary Myelofibrosis

Answer 2

Myeloproliferative neoplasm in which bone marrow is replaced with collagenous connective tissue resulting in progressive fibrosis.

Diffuse bone scelrosis
Hepatosplenomegaly
Extra-medullary haematopoisesis

Question 3

Epiphyseal Lesions

Answer 3

Chondroblastoma (+enchondroma, clear cell chondrosarcoma)
GCT
Geode
Infection

Question 4

Wedge Fracture

Answer 4

Traumatic
Insufficiency
Pathological

Question 5

Multiple Lytic Bony Lesions (Child)

Answer 5

LCH
Fibrous Dysplasia
CRMO

Question 6

Multiple Lytic Bony Lesions (Adult)

Answer 6

Mets
Myeloma
Lymphoma (NHL)

Question 7

Caffey Disease

Answer 7

Infantile Cortical Hyperostosis
<5 months old
Mandible involvement

Question 8

Scelrotic vertebral endplates

Answer 8

Hyperparathyroidism (Rugger Jersey)
Pagets Disease (Picture Frame)
Ostopetrosis (Sandwich Vertebrae)

Question 9

Bilateral symmetric sacro-iliitis

Answer 9

Ank Spond
IBD
RA

Question 10

Unilateral/asymmetric sacro-iliitis

Answer 10

Psoriatic Artritis
Reactive Arthritis
Osteomyelitis (septic arthritis)

Question 11

Diffuse Bony Sclerosis Causes

Answer 11

3 M’s Proof

Malignancy: Mets, lymphoma, leukaemia
Myelofibrosis
Mastocytosis
Sickle cell
Pagers/Pyknodysostosis
Renal osteodystrophy (treated secondary hyperparathyroidism)
Osteopetrosis
Other: osteopoikilosis, melorheostosis, hyperthyroidism, hypoparathyroidism
Flurosis

Question 12

Superscan

Answer 12

Diffuse Mets: prostate, breast, TCC,
Metabolic Bone disease: renal osteodystrophy, osteomalacia, myelofibrosis, mastocytosis, widespread pagets

Question 13

Renal osteodystrophy

Question 14

Soft Tissue Calcification

Question 15

Sub Talar Dislocation

Answer 15

Dislocation of the talonavicular or talocalcaneal joints without talar fracture

Question 16

TB vs Pyogenic Spondylidiscitis

Answer 16

TB: vertebral centric, t-spine, multiple levels, paraspinal abscess (thin walled well defined)

Question 17

Osteonecrosis femoral head

Answer 17

Traumatic
Corticosteroid therapy
Alcoholism
Sickle cell disease
Smoking
DM
Renal failure
SLE

Question 18

Osteolysis of distal clavicle

Answer 18

“Short Pencil”

Scleroderma
Hyperparathyroidism
Osteomyelitis
RA
Trauma
Progeria

Question 19

Vertebral Plana

Answer 19

“I MELT”

Infection
Mets/Myeloma
Eosinophilic Granuloma
Lymphoma/Leukaemia
Trauma/TB

Question 20

Tenosynovial Giant Cell Tumours

Answer 20

Previous PVNS

Fibrohistiocytic tumours arising from synovial of joints, bursae or tendon sheaths

Localised or Diffuse subtypes

Question 21

Acroosteolysis

Answer 21

“CHOP FINger”

Collagen vascular disease - scleroderma, Raynaud disease
Hyperparathyroidism
Other - PVC exposure
Psoriasis/Pyknodysostosis
Familial - Hajdu-Cheyney syndrome
Injury - thermal burn, frost bite
Neuropathy - DM, leprosy

Question 22

Extramedullary Haematopoiesis

Answer 22

Myeloproliferative Disorders:
CML
Polycythaemia vera
Myelofibrosis
Hodgkin lymphoma

Haemaglobinopathies:
Sickle cell disease
Thalassaemia
Hereditary Sphercytosis