Muscles of The Foot Flashcards
Abductor digiti minimi - Attachments
FROML
*calcaneal tuberosity
TO:
*lateral side of proximal phalangeal base of 5th digit
Abductor digiti minimi - Actions
abducts & flexes 5th digit
Abductor digiti minimi - Innervation
lateral plantar nerve (S1-2)
Abductor hallucis - Attachments
FROM:
*medial calcaneal tuberosity
TO:
*medial side of proximal phalangeal base of great toe
Abductor hallucis - Actions
flexes & abducts great toe
Abductor hallucis - Innervation
medial plantar nerve (L4-S1)
Adductor hallucis - Attachments
FROM:
*2-4th metatarsal bases (oblique head)
*distal ends of 3-5 metatarsal (transverse head)
TO:
*lateral base of the proximal phalanx of great toe
Adductor hallucis - Actions
adducts great toe
Adductor hallucis - Innervation
lateral plantar nerve (S1-2)
Extensor digitorum brevis (medial slip of this muscle is extensor hallucis brevis) - Attachments
FROM:
*anterolateral calcaneus
TO:
*dorsal aspect of the base of the proximal phalanx (digit 1 for EHB)
OR
*the lateral side of tendons of extensor digitorum longus (digits 2-4 for EDB)
Extensor digitorum brevis (medial slip of this muscle is extensor hallucis brevis) - Actions
*extension of digits 2-5 (MP & IP; EDB)
*extension of digit 1 (EHB)
Extensor digitorum brevis (medial slip of this muscle is extensor hallucis brevis) - Innervation
deep fibular nerve (L4-S1)
Extensor digitorum brevis (medial slip of this muscle is extensor hallucis brevis) - Attachments
Extensor hallucis brevis - Attachments
FROM:
*extensor digitorum brevis
TO:
*dorsal aspect of the base of the proximal phalanx of the hallux
Extensor hallucis brevis - Actions
extension of great toe at metatarsophalangeal joint
Extensor hallucis brevis - Innervation
deep fibular nerve (L4-S1)
Quadratus plantae - Attachments
FROM:
*medial surface of calcaneus
*lateral process of calcaneal tuberosity
TO:
*long flexor tendons
Quadratus plantae - Actions
assists flexor digitorum longus
Quadratus plantae - Innervation
lateral plantar nerve (S1-2)
Flexor digitorum brevis - Attachments
FROM:
*medial process of calcaneal tuberosity
TO:
*sides of intermediate phalanges of digits 2-5
Flexor digitorum brevis - Actions
flexes toes (proximal IP)
Flexor digitorum brevis - Innervation
medial plantar nerve (L4-S1)
Flexor digiti minimi brevis - Attachments
FROM:
*5th metatarsal base
TO:
*proximal phalangeal base
Flexor digiti minimi brevis - Actions
flexion of 5th digit (MP)
Flexor digiti minimi brevis - Innervation
lateral plantar nerve (S1-2)
Flexor hallucis brevis - Attachments
FROM:
*cuboid
*tendon of tibialis posterior
TO:
*base of the proximal phalanx of great toe
Flexor hallucis brevis - Actions
flexion of great toe (MP)
Flexor hallucis brevis - Innervation
medial plantar nerve (L4-S1)
Dorsal interossei - Attachments
FROM:
*metatarsal shafts
TO:
*proximal phalangeal bases
*dorsal digital expansions of digits 2-4
Dorsal interossei - Actions
abducts (MP) & flexes (MP) digits 2-4
Dorsal interossei - Innervation
lateral plantar nerve (S1-2)
Plantar interossei - Attachments
FROM:
*plantar surface of base of metatarsals
TO:
*dorsal digital expansions of digits 3-5
Plantar interossei - Actions
adducts & flexes (MP) digits 3-5
Plantar interossei - Innervation
lateral plantar nerve (S1-2)
Lumbricals - Attachments
FROM:
*tendons of flexor digitorum longus
TO:
*medial sides of dorsal expansions of digits 2-5
Lumbricals - Actions
flexes proximal phalanges (MP), and extend IP joints
Lumbricals - Innervation
*1st- medial plantar nerve (L4-5-S1)
*2nd-4th- lateral plantar nerve (S1-2)
