muscles of the foot Flashcards
extensor digitorum brevis
O: dorsal surface of calcaneus
I: second through fourth toes via the extensor digitorum longus tendons
F: extend the second through fourth toes
flexor digitorum brevis
O: medial process of calcaneus and plantar aponeurosis
I: middle phalanges of second through fifth toes
F: flex middle phalanges of the second through fifth toes
Abductor hallucis
O: medial process of calcaneus and plantar aponeurosis
I: proximal phalanx of first toe and medial sesamoid bone
F: abduct the first toe
assist to flex the first toe
abductor digiti minimi
O: lateral process of calcaneus and plantar aponeurosis
I: proximal phalanx of fifth toes (lateral surface)
F: flex the fifth toe
assist to abduct the fifth toe
extensor hallucis brevis
O: dorsal surface of calcaneus
I: proximal phalanx of first toe
F: extend the first toe
flexor hallucis brevis
O: plantar surfaces of cuboid and lateral cuneiform
I: medial and lateral surfaces of base of proxmial phalanx of first toe
F: flex the first toe
adductor hallucis
O: oblique head: bases of 2-4 metatarsals
transverse head: plantar ligament of 3-5 metatarsophalangeal joints
I; lateral surface of base of proximal phalanx of first toe
F: adduct the first toe
Assist tot flex the first toe
flexor digiti minimi brevis
O: base of fifth metatarsal
I: base of proximal phalanx of fifth toe
F: flex the fifth toe
quadratus plantea
O: medial and lateral sides of plantar surface of calcaneus
I: posterior, lateral aspect of flexor digitorum longus tendon
F: assist flexor digitorum longus to flex 2-5 toes
plantar interossei
O: medial surfaces of 3-5 metatarsals
I: medial surfaces of proximal phalanges of 3-5 toes
F: adduct 3-5 toes
flex 3-5 toes
dorsal interossei
O; adjacent surfaces of all metatarsals
I: first medial surface of proximal phalanx of 2nd toe
second through fourth: lateral surfaces of proximal phalanges 2-4 toes
F: abduct 2-4 toes
flex 2-4 toes
LUmbricals of the foot
O: tendons of flexor digitorum longus
I: bases of proximal phalanges of 2-5 toes and extensor digitorum longus tendons
F: flex and extend 2-5 toes
