Which carpal bone is most commonly fractured in a fall on an outstretched hand?

Prepare for the Abeka Biology Test 3 with our extensive resources. Engage in flashcards and multiple choice questions, each offering hints and thorough explanations to ensure success. Equip yourself with essential knowledge and excel in your exam!

Multiple Choice

Which carpal bone is most commonly fractured in a fall on an outstretched hand?

Explanation:
A fall on an outstretched hand tends to transmit force through the wrist to the scaphoid, which sits on the thumb side between the radius and the other carpal bones. Its position makes it particularly vulnerable when the hand is extended, especially at the scaphoid’s waist, which is a common fracture site. The blood supply to the scaphoid enters from the distal part and travels toward the proximal pole, so a fracture can disrupt this flow and lead to slow healing or avascular necrosis if not treated promptly. Tenderness in the anatomical snuffbox is a classic sign. While other carpal bones can fracture, the scaphoid is by far the most frequent in FOOSH injuries.

A fall on an outstretched hand tends to transmit force through the wrist to the scaphoid, which sits on the thumb side between the radius and the other carpal bones. Its position makes it particularly vulnerable when the hand is extended, especially at the scaphoid’s waist, which is a common fracture site. The blood supply to the scaphoid enters from the distal part and travels toward the proximal pole, so a fracture can disrupt this flow and lead to slow healing or avascular necrosis if not treated promptly. Tenderness in the anatomical snuffbox is a classic sign. While other carpal bones can fracture, the scaphoid is by far the most frequent in FOOSH injuries.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy