What is the most frequently fractured carpal bone in the wrist?

The scaphoid is recognized as the most frequently fractured carpal bone in the wrist. This is primarily due to its anatomical position and the way forces are transmitted across the wrist during activities that involve falling on an outstretched hand. The scaphoid bone, which is located on the radial side of the wrist, plays a crucial role in wrist motion and stability.

When a person falls and extends their wrist, the impact usually travels through the scaphoid, resulting in a fracture, particularly in the waist of the bone, which is the most common site of injury. Additionally, the blood supply to the scaphoid can be compromised after a fracture, which can lead to complications such as avascular necrosis, making early diagnosis and treatment essential.

The other carpal bones mentioned are less frequently fractured. While the lunate and triquetrum do sustain injuries, they occur less often compared to scaphoid fractures, and the pisiform is usually not a common site of fracture due to its location and the protective structures surrounding it. Thus, the scaphoid's unique position and the nature of wrist injuries contribute significantly to its status as the most frequently fractured carpal bone.