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The Flexor Hallucis Brevis is an intrinsic muscle of the foot located in Plantar Layer III. The muscles located in Plantar Layer III are:
- Flexor hallucis brevis
- Flexor digiti minimi pedis
- Adductor hallucis
The flexor hallucis brevis can be considered to have two heads: Medial Head and Lateral Head.
ATTACHMENTS:
- Tarsals to the big toe (toe #1).
- The proximal attachment is onto the cuboid and the third cuneiform.
- The distal attachment is onto the medial and lateral sides of the plantar surface of the base of the proximal phalanx of the big toe.
ACTIONS:
- Flexes the big toe at the metatarsophalangeal joint.
NOTE: The flexor hallucis brevis has a sesamoid bone in each of its two (medial and lateral) distal tendons.
