What is the most common site of injury for the scaphoid?

• A. Head
• B. Waist
• C. Neck
• D. Body

Answer: (B)

The scaphoid bone, one of the carpal bones in the wrist, most commonly sustains injuries at the waist. This area of the scaphoid is located between the proximal and distal segments of the bone and is critical because it is a relatively narrow region. Injuries in this location can occur due to falls onto an outstretched hand, which is a common mechanism for scaphoid fractures.

The waist region has a unique anatomical consideration; it is often the site of maximum stress transmission during wrist loading activities. Additionally, injuries here can lead to complications such as avascular necrosis, particularly due to the limited blood supply that this segment receives. While other areas of the scaphoid can also be injured, they are less frequently affected than the waist. Thus, understanding the commonality of waist injuries is fundamental in the clinical assessment and management of wrist trauma.