- Anatomical terminology
- Skeletal system
- Joints
- Muscles
- Head muscles
- Neck muscles
- Muscles of upper limb
- Thoracic muscles
- Muscles of back
- Muscles of lower limb
- Pelvic muscles
- Muscles of thigh
- Muscles of leg
- Muscles of foot
- Dorsal muscles of foot
- Plantar muscles of foot
- Heart
- Blood vessels
- Nervous system
- Respiratory system
- Digestive system
- Lymphatic system
- Female reproductive system
- Male reproductive system
- Endocrine glands
- Eye
- Ear
Extensor hallucis brevis
The extensor hallucis brevis (Latin: musculus extensor hallucis brevis) is a small, thin foot muscle located in its dorsal aspect. Therefore, together with the extensor digitorum brevis, the extensor hallucis brevis belongs to the dorsal foot muscles. It stretches between the calcaneus and proximal phalanx of the first toe. As the name suggests, the extensor hallucis brevis aids in the extension of the hallux.
Extensor hallucis brevis | |
Origin | Lateral and superior surfaces of calcaneus, inferior extensor retinaculum |
Insertion | Base of proximal phalanx of hallux |
Action | Extension of hallux at 1st metatarsophalangeal joint |
Innervation | Deep peroneal (fibular) nerve (L5 - S1) |
Blood supply | Branches of dorsalis pedis artery |
Origin
The extensor hallucis brevis muscle originates from the superior and lateral surfaces of the calcaneus and inferior extensor retinaculum.
Insertion
The extensor hallucis brevis inserts on the base of the proximal phalanx of the hallux.
Action
The extensor hallucis brevis muscle extends the hallux at the first metatarsophalangeal joint.
Innervation
The extensor hallucis brevis is innervated by the deep peroneal (fibular) nerve (L5 - S1) - a branch of the common peroneal (fibular) nerve.
Blood supply
The extensor hallucis brevis receives arterial blood supply from the branches of the dorsalis pedis artery.