Flexor Hallucis BrevisThe structure indicated is the flexor hallucis brevis muscle of the foot. The intrinsic muscles on the plantar aspect of the foot are divided into four layers. The flexor hallucis brevis muscle is located in the third layer of intrinsic foot muscles. There are three muscles located in this layer:
- Flexor hallucis brevis
- Adductor hallucis
- Flexor digiti minimi brevis
Origin: Plantar surface of cuboid and lateral cuneiform bone
Insertion: Lateral and medial sides of base of proximal phalanx of the great toe
Action: Flexes great toe at metatarsophalangeal joint
Innervation: medial plantar nerveLearn more about the anatomy of the foot muscles in this tutorial.