Author Question: In reference to the AP oblique with 15-20 degree medial rotation, what error is present? part is ... (Read 62 times)

viki · **on:** Jul 17, 2018

In reference to the AP oblique with 15-20 degree medial rotation, what error is present?

part is underrotated
tibiotalar joint isn't open
part is overrotated
centering is incorrect

Question 2

When the zygoma breaks from all three points of articulation, this classifies which type of fracture?

tripod
LeForte
Pott's
blowout

Brenm · **Reply #1 on:** Jul 17, 2018

Answer to Question 1

centering is incorrect

Rationale: Proper centering should be directed to the mid ankle joint. The center point on the image correlates to an inch above the ankle joint. Although this as individual criterion may not be enough to fail an image, it can directly affect the collimated margins.

Answer to Question 2

tripod

Rationale: A tripod fracture results when the zygoma breaks from all three articulation points: the maxilla, the zygomatic arch, and the frontal bone.