Scaphoid bone

Scaphoid Bone

The Scaphoid Bone (pronounced: /ˈskæfɔɪd/), also known as the os scaphoideum in Latin, is one of the eight carpal bones that make up the wrist, or the carpus. The term "scaphoid" comes from the Greek word "skaphos," meaning "boat," and "eidos," meaning "form" or "shape," due to its boat-like shape.

Anatomy

The Scaphoid Bone is situated between the radius and the ulna, the two bones of the forearm. It is located on the thumb side of the wrist, making it easily palpable. The bone has a unique shape, being rounded on one side and flat on the other. It is the largest bone in the proximal row of wrist bones.

Function

The primary function of the Scaphoid Bone is to facilitate wrist movement. It acts as a bridge between the two rows of carpal bones, allowing for the complex range of motion we associate with the wrist. It also plays a crucial role in transmitting forces from the hand to the forearm.

Clinical Significance

The Scaphoid Bone is the most commonly fractured carpal bone, typically resulting from a fall onto an outstretched hand. Due to its unique blood supply, fractures to the Scaphoid Bone can lead to avascular necrosis, a condition where bone tissue dies due to lack of blood supply.

Related Terms

• Carpal Bones
• Radius
• Ulna
• Proximal Row
• Hand
• Avascular Necrosis

External links

• Medical encyclopedia article on Scaphoid bone
• Wikipedia's article - Scaphoid bone

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