Which projection is applied to visualize the scaphoid in the wrist?

• A. True AP
• B. Ulnar deviation
• C. Radial deviation
• D. Tangential projection

Answer: (B)

The best projection to visualize the scaphoid in the wrist is achieved through ulnar deviation. This technique maximizes the visibility of the scaphoid by angling the wrist in a way that it moves the scaphoid away from overlapping carpal bones, thus reducing superimposition. When the wrist is positioned with ulnar deviation, the scaphoid is placed in a more optimal position for imaging, enhancing its visibility and allowing for more accurate assessment of any fractures or abnormalities present.

In contrast, a true AP projection does not adequately highlight the scaphoid due to the overlap of other carpal bones, which can obscure lesions or fractures. Radial deviation, while it may visualize other wrist structures, focuses the view on different aspects of the carpal bones and does not enhance scaphoid visibility. On the other hand, a tangential projection is primarily used for specific areas requiring detailed views, not specifically tailored for the scaphoid. Therefore, ulnar deviation is the most effective approach to adequately visualize this particular wrist bone in imaging studies.