
Other Names
- Forearm (Upper-outer)
- Supinator longus (out dated)
Heads
- Brachioradialis
Movement
Attachments
- Humerus
- Lateral Condyle
- Radius (Lateral Distal)
- Styloid Process
Related Muscles
Comments
The brachioradialis is a stronger elbow flexor when the radioulnar joint (forearm) is in a midposition between supination and pronation. When the forearm is pronated, the brachioradialis is more active during elbow flexion since the biceps brachii is in a mechanical disadvantage.
When the forearm is pronated, the brachioradialis tends to supinate as it flexes. In a supinated position, it tends to pronate as it flexes.