Extensor Hallucis Brevis - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The extensor hallucis brevis is an intrinsic muscle of the foot. It is often considered to be the medial part of the extensor digitorum brevis muscle, rather than a separate structure. Attachments: Originates from the calcaneus and inferior extensor retinaculum. It attaches to the base of the proximal phalanx of the great toe. Actions: Extension of the great toe. Innervation: Deep fibular nerve. Blood Supply: Dorsalis pedis artery. By TeachMeSeries Ltd (2026) Fig 1The dorsal layer of foot muscles. Pro Feature - 3D Model 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 extensor hallucis brevis? The extensor hallucis brevis is an intrinsic muscle located in the foot, often regarded as part of the extensor digitorum brevis. Its primary function is to extend the great toe. Where does the extensor hallucis brevis originate? This muscle originates from the calcaneus and the inferior extensor retinaculum. These attachment points are crucial for its function in toe extension. What is the primary action of the extensor hallucis brevis? The main action of the extensor hallucis brevis is the extension of the great toe. This action is essential for various movements during walking and running. Which nerve innervates the extensor hallucis brevis? The deep fibular nerve innervates the extensor hallucis brevis. This nerve supply is vital for the muscle's contraction and function. What is the blood supply to the extensor hallucis brevis? The extensor hallucis brevis receives its blood supply from the dorsalis pedis artery. This vascular support is important for the muscle's metabolic needs and overall function. Rate This Article