Interpreting X-Rays

Question 1

If joints are subluxed, what does that mean?

Answer 1

articular surfaces intersect INSIDE of the joint

Question 2

when describing bone tumors, what should you comment on?

Answer 2

1. bone density
2. location
3. type of matrix

Question 3

bone tumors that have speckled matrices indicate tumors of what origin?

Answer 3

tumors derived from cartilage

Question 4

bone tumors with cloudy matrices indicate tumors derived from what?

Answer 4

osteoblasts (bony origins)

Question 5

bone tumors with a ground glass appearance indicate tumors derived from what?

Answer 5

fibrous tissue

Question 6

what are some examples of periosteal reaction appearance occuring in bones?

Answer 6

lamellated (onion skin)
hair-on-end or sunburst
Codman’s triangle **the most malignant

Question 7

what is an avulsion?

Answer 7

describes a fracture in which a piece of bone is pulled away from the main body of bone

Question 8

what is impacted/compression fracture refer to?

Answer 8

bones are driven into each other by force

so length of bone will be less than normal

Question 9

what does a greenstick fracture refer to?

Answer 9

(usually seen in children)

bending force on a long bone causes one cortex to break, but opposite cortex remains in place

Question 10

how would you describe the direction of a fracture if it is displaced?

Answer 10

the direction of displacement is described by teh distal fragment