Flexor digitorum brevis

The flexor digitorum brevis (also flexor digitorum brevis muscle, flexor digiti quinti brevis, latin: musculus flexor digitorum brevis) is a plantar muscle situated in the middle of the sole of the foot and right above the plantar aponeurosis.


The flexor digitorum brevis originates from the calcaneal tuberosity and the plantar aponeurosis.


The tendons of the flexor digitorum brevis insert at the bases of the medial phalanges of the second to fifth digits of the foot.


The function of the flexor digitorum brevis is flexing the proximal and medial phalanges of the second, third, fourth and fifth toes.


The flexor digitorum brevis is innervated by the medial plantar nerve, a terminal branch of the tibial nerve.