17. Principles Appendicular skeleton

Question 1

Oblique projections!

Answer 1

Question 2

What angle of obliquity is typically used for oblique projections?

Answer 2

30-45 degress

Question 3

What are the three features used to describe aggressive / nonaggressive bone lesions?

Answer 3

1) Cortical lysis
2) Periosteal reaction (ACTIVE vs smooth / none)
3) Zone of transition

Question 4

Describe three different types of lysis

Answer 4

1) Geographic: Large, well defined
2) Moth-eaten: Multiple medium to small lytic foci
3) Permeative: Smaller of pinpoint lytic foci

Question 5

TABLE of ortho disease by number of bones effectred, location, demographic

Answer 5