Distal radius
Distal Radius
The Distal Radius (/dɪˈstæl ˈreɪdiəs/), is one of the two large bones of the forearm, the other being the ulna. The distal radius is located on the lateral side of the forearm, closest to the thumb.
Etymology
The term "distal radius" is derived from the Latin words "distare", meaning "to stand apart from", and "radius", meaning "ray". This refers to the bone's position in the forearm, as it is located further from the body's midline compared to the ulna.
Anatomy
The distal radius articulates with two bones in the wrist: the scaphoid and the lunate. The end of the distal radius, known as the styloid process, can be easily felt at the base of the thumb. The distal radius and ulna bones are connected by a band of fibrous tissue known as the interosseous membrane.
Related Terms
- Fracture: A break in the continuity of the bone. Distal radius fractures are among the most common types of fractures.
- Colles' fracture: A specific type of fracture of the distal radius.
- Smith's fracture: Another specific type of fracture of the distal radius, also known as a reverse Colles' fracture.
- Osteoporosis: A condition that weakens bones, making them more likely to break. It often affects the distal radius.
See Also
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