Brachioradialis

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Other Names

  • Forearm (Upper-outer)
  • Supinator longus (out dated)

Heads

  • Brachioradialis

Movement

Elbow

Attachments

Origin

  • Humerus
    • Lateral Condyle

Insertion

  • Radius (Lateral Distal)
    • Styloid Process

Related Muscles

Brachioradialis

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.

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