Flexor hallucis brevis

The flexor hallucis brevis (also flexor hallucis brevis muscle, latin: musculus flexor hallucis brevis) is a deep muscle of the sole of the foot that aids in flexion of the big toe.

Origin

The flexor hallucis brevis originates from the lateral cuneiform bone and the long plantar ligament.

Insertion

The flexor hallucis brevis inserts at the base of the distal phalanx of the first digit of the foot (also known as hallux or big toe).

Action

The main function of the flexor hallucis brevis is flexion of the big toe.

Innervation

The flexor hallucis brevis is innervated by the medial plantar nerve, one of the terminal branches of the tibial nerve.