Structure G on a wrist radiograph is which bone?

Structure G on a wrist radiograph is which bone?

• A. Hamate
• B. Trapezium
• C. Trapezoid
• D. Capitate

Answer: (D)

Recognizing carpal bones on a wrist radiograph hinges on knowing the two rows of carpal bones and which bone sits at the center of the distal row. The central bone between the lateral and medial sides of the distal row is the capitate. It’s the largest carpal bone and has a rounded head that forms the base for the third metacarpal, with proximal connections to the scaphoid and lunate. This central, prominent position distinguishes it from the others: the trapezium sits at the thumb side, the trapezoid lies just medial to it, and the hamate sits on the medial side with a distinctive hook. So the structure in question is the capitate.

Recognizing carpal bones on a wrist radiograph hinges on knowing the two rows of carpal bones and which bone sits at the center of the distal row. The central bone between the lateral and medial sides of the distal row is the capitate. It’s the largest carpal bone and has a rounded head that forms the base for the third metacarpal, with proximal connections to the scaphoid and lunate. This central, prominent position distinguishes it from the others: the trapezium sits at the thumb side, the trapezoid lies just medial to it, and the hamate sits on the medial side with a distinctive hook. So the structure in question is the capitate.