Anatomy of Movement- muscles in the foot alone Flashcards

Extensor Digitorum Brevis

O= lateral and dorsal calcaneus
I= dorsal aponeurosis of toes 2-4
A= extends the toes

Extensor Hallucis Brevis

O= dorsal calcaneus
I= base of first distal phalanx
A= extends great toe ( your big toe)

Dorsal Interossi

O= adjacent sides of metatarsals
I= base of proximal phalanges and dorsal digital expansions
A= abducts the toes

Planter Interossei

O= base and medial sides of metatarsals 3-5
I= medials sides of base of proximal phalanges 3-5
A= adducts toes 3-5

Lumbricals

O= Tendons of flexor digitorium longus
I= medially on the dorsal digital expansions of toes 2-5
A= flexes the proximal phalanges

Opponens Digiti Minimi

O= Dorsal surface of tubercle of 5th metatarsal
I= base of 5ht proximal phalanx
A= abducts fifth toe

Flexor Digiti Minimi

O= base of 5th metatarsal and peroneus longus tendon sheath
I= proximal phalanx of 5th toe
A= flexes small toe (pinky)

Adductor Hallucis

O= base of 2nd-4th metatarsals and peroneus longus tendon sheath
(oblique head)
O= metatarsophalangeal ligament 3-5 ( transverse head)
I= base of 1st proximal phalanx and lateral sesamoid bone
A= adducts great toe (big toe)

Flexor Hallucis Brevis

O= plantar surface of cuboid, lateral cuneiform, and tendon of
tibialis posterior
I= sesamoid bones and medial and lateral sides of base of first
proximal phalanx
A= flexes great toe

Abductor Digiti Minimi

O= medial and lateral tuberosity of calcaneus and plantar aponeurosis
I= lateral side of 5th proximal phalanx
A= abducts small toe

Flexor Digitorum Brevis

O= medial part of calcaneal tuberosity and plantar aponeurosis
I= by individual tendons to middle phalanges of toes 2-5
A= flexes toes 2-5 at the proximal interphalangeal joint

Abductor Hallucis

O= Medial part of calcaneal tuberosity
I= base of first proximal phalanx and medial sesamoid
A= abducts great toe