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Part 4 Boards X-ray > Extremity Views > Flashcards

Extremity Views Flashcards

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1
Q

Motive

A

Pain or dysfunction

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2
Q

Check the periosteum

A

Periosteal reaction - parallel and spiculated

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3
Q

Parallel periosteal reaction aka

A

Linear

Laminated

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4
Q

Parallel periosteal reaction

A

Ewing’s sarcoma
Infection
Trauma
Only in long bones

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5
Q

Spiculated periosteal reaction aka

A

Sunburst

Radiating

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6
Q

Trauma

A

Look for fx or bony callus

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7
Q

Infection

A

WBC count, staph aureus

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8
Q

<25 laminated without bony callus

A

Either Ewing’s or osteomyelitis

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9
Q

> 30 without callus

A

Osteomyelitis

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10
Q

Spiculated/radiating/sunburst primary bone cancer

A

Osteosarcoma
Chondrosarcoma
Fibrosarcoma

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11
Q

Only time you pick osteosarcoma over 30

A

Late stage paget’s

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12
Q

Trauma and infeciton do not

A

Expand

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13
Q

Check the cortex

A

Thinning
Thickening
Interruption
Deformity of the cortex

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14
Q

Thinning of the cortex

A

Osteoporosis

Grey bone/grey soft tissue with pencil thin cortices

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15
Q

Thickening cortex

A

Paget’s

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16
Q

Interruption of cortex

A

Fracture or non-union

17
Q

Deformity of cortex

A

Pagets

Fibrous dysplasia

18
Q

Check teh medulla

A

Whiter - blastic mets
Pagets

Darker - lytic mets, mm, BBT

19
Q

Loss of joint space

A 
Yes = DJD/RA
No = AVN
20
Q

Salter harris fracture types 1-5

A

Type 1 - epiphysis slides along metaphysis (SCFE)
Type 2 - through growth center and metaphysis
Type 3 - through growth center and epiphysis
Type 4 - thorugh epiphysis, growth center, and metaphysis
Type 5 - compression of growth center

21
Q

Most common salter harris

A

Type 2 through growth center and metaphysis

22
Q

Calcification of the muscle belly

M/c seen in biceps and quadriceps

A

Myositis ossificans

23
Q

Calcium within muslce
Can work on them
M/c/c major repetitive trauma
Pt typically an athlete

A

Myositis ossificans

24
Q

3 ways to differentiate between primary malignancy (sarcoma) and Myositis ossificans

A

Both look extremely white on film
Periosteal rxn = primary malignancy
MO usually parallel to shaft

Part 4 Boards X-ray (22 decks)

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