NCIt definition : A muscle in the foot that allows flexion of the four lateral toes and supports the
medial and lateral longitudinal arches. It originates on the medial process of the
posterior calcaneal tuberosity and inserts as tendons into the borders of the middle
phalanx of the four lateral toes. It is innervated by the medial plantar nerve and
supplied by the medial and lateral plantar arteries.;
Alternative definition : CDISC: A muscle in the foot, in general extending from the medial process of the posterior
calcaneal tuberosity to the borders of the middle phalanx of the four lateral toes;
primary function is flexion of the four lateral toes and support of the medial and
lateral longitudinal arches.;