Question

What 4 things must be present on a PA wrist projection to ensure that the positioning was correct?

Answer 1

Correct positioning for a PA wrist projection includes superimposed distal radius and ulna, equally spaced metacarpals, minimal overlap of distal radius and ulna with carpals, and the pisiform positioned medially.

Step-by-step explanation:

To ensure correct positioning on a PA wrist projection, four criteria must be met:

• The distal radius and ulna should be superimposed.
• The metacarpals should be equally spaced.
• There should be no more than slight overlap of the distal radius and ulna with the carpals.
• The pisiform should be situated to the medial side of the wrist.

These criteria help in making sure that the anatomy of interest is represented without distortion and with clear visibility, necessary for accurate diagnosis and treatment planning.