Muscles of the Foot Flashcards
What are the muscles of the Dorsum of the foot?
Extensor digitorum brevis
Extensor hallucis brevis
What is the blood supply, innervation, and action of extensor digitorum brevis?
dorsal pedis artery
deep plantar artery
deep peroneal nerve
extends toes
Where does extensor digitorum brevis insert?
tendons of extensor digitorum longus
What is the blood supply, innervation, and action of extensor hallucis brevis?
dorsal pedis artery
deep plantar artery
deep peroneal nerve
extends big toe
Where does extensor hallucis brevis insert?
base of proximal phalanx of big toe
What are the muscles of the first layer of the sole of the foot?
abductor hallucis
flexor digitorum brevis
abductor digiti minimi
What is the blood supply, innervation, and action of abductor hallucis?
posterior tibial artery
fibular artery
medial plantar nerve
abducts big toe
Where does abductor hallucis insert?
base of proximal phalanx of big toe
What is the blood supply, innervation, and action of flexor digitorum brevis?
post tibial artery
fibular artery
medial plantar nerve
flexes middle phalanges of lateral four toes
Where does flexor digitorum brevis insert?
middle phalanges of lateral four toes
What is the blood supply, innervation, and action of abductor digiti minimi?
post tibial artery
fibular artery
lateral plantar nerve
abducts little toe
Where does abductor digiti minimi insert?
proximal phalanx of little toe
What are the muscles of the second layer of the sole of the foot?
quadratus plantae
lumbricals (4)
What is the blood supply, innervation, and action of quadratus plantae?
post tibial artery
fibular artery
lateral plantar nerve
aids in flexing toes
Where does quadratus plantae insert?
tendons of flexor digitorum longus
What is the blood supply, innervation, and action of lumbricals (4)?
post tibial artery
fibular artery
lateral plantar nerve
1st is by medial plantar nerve
lateral 3 by lateral plantar nerve
Where do the lumbricals insert?
proximal phalanges, extensor expansion
What are the muscles of the third layer of the sole of the foot?
flexor hallucis brevis
adductor hallucis (oblique & transverse)
flexor digiti minimi brevis
What is the blood supply, innervation, and action of flexor hallucis brevis?
post tibial artery
fibular artery
medial plantar nerve
flexes big toe
Where does flexor hallucis brevis insert?
proximal phalanx of big toe
What is the blood supply, innervation, and action of adductor hallucis oblique/transverse heads?
post tibial artery
fibular artery
lateral plantar nerve
adducts big toe
Where does adductor hallucis oblique/transverse insert?
proximal phalanx of big toe
What is the origin of the adductor hallucis oblique head? transverse head?
bases of 2-4 metatarsals
capsule of lateral four metatarsophalangeal joints
What is the blood supply, innervation, and action of flexor digiti minimi brevis?
post tibial artery
fibular artery
lateral plantar nerve
flexes little toe
Where does flexor digiti minimi brevis insert?
proximal phalanx of little toe
What are the muscles of the fourth layer of the sole of the foot?
plantar interossei (3) dorsal interossei (4)
What is the blood supply, innervation, and action of plantar interossei (3)?
post tibial artery
fibular artery
lateral plantar nerve
adducts toes, flex proximal and extend distal phalanges
Where do the plantar interossei insert?
medial sides of base of proximal phalanges 3-5
What is the blood supply, innervation, and action of dorsal interossei (4)?
post tibial artery
fibular artery
lateral plantar
abduct toes, flex proximal and extend distal phalanges
Where do the dorsal interossei insert?
proximal phalanges of second toe (medial and lateral sides) and third and fourth toes (lateral sides)
