Brachioradialis

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Other Names Forearm (Upper-outer) Supinator longus (out dated) Heads Brachioradialis Movement Elbow Flexion Attachments Origin Humerous Lateral Condyle Insertion Radius (Lateral Distal) Styloid Process Related Muscles Brachialis Biceps Brachii

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.