Flexor Digitorum Brevis
Flexor Digitorum Brevis is the central muscle of the superficial layer of the plantar foot muscles. It lies in the middle of the sole, immediately superior to the plantar aponeurosis and inferior to the tendon of Flexor Digitorum Longus.
The Flexor Digitorum Brevis muscle originates from the medial process of calcaneal tuberosity and the central part of the plantar aponeurosis.
It inserts on the middle phalanges of the lateral four toes by a tendon to each toe.
Flexor Digitorum Brevis is supplied by the medial plantar nerve (S1 & S2), which is a terminal branch of the tibial nerve.
The Flexor Digitorum Brevis is supplied by the medial and lateral plantar arteries.
Flexor Digitorum Brevis plantarflexes the four lateral toes at the proximal interphalangeal joint.
As an intrinsic muscle of the foot, the Flexor Digitorum Brevis plays an important role in stabilising the longitudinal arch of the foot.
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