Which direction is the PA wrist projection oriented?

The PA wrist projection, or posteroanterior wrist projection, is oriented in a horizontal direction. In radiography, this means that the central ray enters from the posterior side of the wrist and exits through the anterior side while the wrist is positioned flat against the imaging receptor. This horizontal orientation is critical for ensuring that the structures of the wrist, including the carpal bones and joint spaces, are clearly visualized without unnecessary distortion.

In a typical PA projection, the patient’s wrist is extended and aligned flat, facilitating optimal visualization. The correct horizontal alignment allows the radiologist to obtain a detailed image of the wrist anatomy, which is essential for diagnosing fractures, joint abnormalities, or other wrist conditions.