Bone
Radius
Forearm bone on the thumb side
High-yield
The radius directly meets the scaphoid and lunate at the wrist. Its radial tuberosity receives biceps, while the distal ulnar notch forms the second radioulnar joint.
Overview
In anatomical position, the radius lies lateral to the ulna. Its head rotates near the elbow while its broad distal end moves around the ulnar head, carrying the hand through pronation and supination.
Reference facts
- Bone type
- A long bone with a broad distal end
- Key landmarks
- Proximal head, neck and radial tuberosity; distal radial styloid, ulnar notch and dorsal tubercle of Lister
- Articulations
- Humeral capitulum; ulna at both radioulnar joints; scaphoid and lunate at the radiocarpal joint
Clinical correlation
A Colles-pattern fracture near the wrist has backward tilt or displacement of the distal fragment. It can follow a fall onto an outstretched hand; other distal-radius fractures have different patterns.
Frequently asked questions
What type of bone is the radius?
A long bone with a broad distal end.
What does the radius articulate with?
Humeral capitulum; ulna at both radioulnar joints; scaphoid and lunate at the radiocarpal joint.
What are the key landmarks of the radius?
Proximal head, neck and radial tuberosity; distal radial styloid, ulnar notch and dorsal tubercle of Lister.