Audio LecturePro Feature Brachioradialis 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The brachioradialis is a muscle within the superficial compartment of the posterior forearm. The medial edge of the brachioradialis forms the lateral border of the cubital fossa. Attachments: Originates from the proximal aspect of the lateral supracondylar ridge of humerus. It attaches to the distal end of the radius, just proximal to the radial styloid process. Actions: Flexion at the elbow. Contributes to supination at the proximal radioulnar joint. Innervation: Radial nerve. Blood supply: Radial artery. By TeachMeSeries Ltd (2026) Fig 1The muscles in the superficial layer of the posterior forearm. 3D ModelPro Feature You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Frequent questions What is the brachioradialis muscle? The brachioradialis is a muscle located in the superficial compartment of the posterior forearm, playing a crucial role in elbow flexion. Where does the brachioradialis originate and insert? This muscle originates from the proximal part of the lateral supracondylar ridge of the humerus and inserts at the distal end of the radius, just above the radial styloid process. What actions does the brachioradialis perform? The primary action of the brachioradialis is to facilitate flexion at the elbow, and it also aids in supination at the proximal radioulnar joint. Which nerve innervates the brachioradialis? The brachioradialis is innervated by the radial nerve, which is essential for its motor function. What is the blood supply to the brachioradialis? The blood supply to the brachioradialis muscle comes from the radial artery, ensuring it receives the necessary nutrients for proper function. Rate This Article