Test 2: 15 Flashcards by jillian Bastidas

Q

bone will have a high or low Z

A

high due to Ca and P
Z=atomic number

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Q

what is a stress projection

A

try to show instability of a joint by stressing/pushing on a joint while getting an xray

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Q

what to include in xray if looking at bone

A

joint above and below

2 views

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Q

what to include in xray for joint

A

1/2 of bones above and below joint
joint centered on image

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Q

— is an ossification center of a bony outgrowth such as a tuberosity

A

apophysis

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Q

what is cut back zone

A

normal growth of bones
looks like loss of bone

carpus

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Q

A

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Q

A

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Q

diffuse bone issues are caused by —

A

metabolic disease: juvenile osteofibrosis
nutritional disease

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Q

monostotic lesions are caused by

A

trauma
infection
primary neoplasia

primary osseous neoplasia-osteosarcoma

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Q

polyostotic lesions are caused by —

A

cancer (metastatic or round cell)
infections

multiple myeloma

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Q

what are the characteristics of aggressiveness of osseous lesions

A

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Q

is a sunburst lesion more or less aggressive than an onion skin lesion?

A

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Q

is geographic osteolysis more or less aggressive then permeative osteolysis

A

geographic- localized can be a cyst

moth eaten and permeative: usually from neoplasia

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Q

what kind of osteolysis

A

geographic

localized to one area

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Q

what kind of osteolysis

A

moth eaten

Q

what kind of osteolysis

A

permeative

secondary to osteosarcoma

Q

describe transitional zone of this lesion

A

short well defined: less aggressive

has geographic osteolysis- cyst but normal bone is clear and close by

Q

describe the transitional zone of this lesion

A

long and poorly defined= more aggressive

can’t tell will healthy bone ends and sick bone starts

Q

A

Q

A

Q

A

yellow= articular space
blue= sub chondral bone
red= peri-articular bone

can not see articular cartilage in plain xray

Q

how to see cartilage on xray

A

use contrast
can see outline of cartilage

Q

an aggressive joint lesion will have — bone destruction and — bone production.

A

subchondral

Irregular, heterogeneous, interrupted intra- or peri-articular bone production

aggressive joint lesions will have --- of the articular space and --- of soft tissue

narrowing marked swelling

how to see joint effusion in stifle?

fat pad will be squished

normal or abnormal?

abnormal on the right * joint effusion: fat pad is squished * Osteoarthritis (Degenerative Joint Disease – DJD) * Sub-chondral bone sclerosis * Osteophytes

what are some clinical signs of a non-agressive joint lesion

* Osteoarthritis (Degenerative Joint Disease – DJD) * Sub-chondral bone sclerosis * Osteophytes * joint effusion

non-aggressive joint lesion