Exam 1 - Foot Flashcards
What are the muscles of the forefoot?
Dorsal interosseous muscles, Plantar interosseous muscles, Extensor hallucis brevis, Extensor digitorum brevis
What are the muscles of the 1st layer of the Sole of the foot?
Abductor digiti minimi, Flexor digitorum brevis, Abductor hallucis
What are the muscles of the 2nd layer of the Sole of the foot?
Quadratus plantae, lumbricals
What are the muscles of the 3rd layer of the Sole of the foot?
Flexor digiti minimi brevis, Adductor hallucis, Flexor hallucis brevis
What are the muscles of the 4th layer of the Sole of the foot?
Plantar interossei muscles and Dorsal interossei muscles
What is the origin of Abductor hallucis?
medial side of the tuberosity of calcaneus
What is the insertion of Abductor hallucis?
medial side of the base of the proximal phalanx of the great toe (hallux)
What are the functions of Abductor hallucis?
abducts the great toe; flexes the metatarsophalageal joint
What innervates Abductor hallucis?
medial plantar nerve
What supplies blood to Abductor hallucis?
medial plantar a.
What is the origin of Flexor hallucis brevis?
cuboid, lateral cuneiform, medial side of the first metatarsal
What is the insertion of Flexor hallucis brevis?
medial belly: medial side of proximal phalanx of the great toe; lateral belly: lateral side of the proximal phalanx of the great toe
What are the functions of Flexor hallucis brevis?
flexes the metatarsophalangeal joint of the great toe
What innervates Flexor hallucis brevis?
medial plantar n.
What supplies blood to Flexor hallucis brevis?
medial plantar a.
What is the origin of Flexor digitorum brevis?
tuberosity of the calcaneus, plantar aponeurosis, intermuscular septae
What is the insertion of Flexor digitorum brevis?
base of the middle phalanx of digits 2-5 after splitting to allow passage of the flexor digitorum longus tendons
What are the functions of Flexor digitorum brevis?
flexes the metatarsophalangeal & proximal interphalangeal joints of digits 2-5
What innervates Flexor digitorum brevis?
medial plantar nerve
What supplies blood to Flexor digitorum brevis?
medial and lateral plantar aa.
What is the origin of Quadratus plantae?
anterior portion of the calcaneus and the long plantar ligament
What is the insertion of Quadratus plantae?
tendons of the flexor digitorum longus m.
What are the functions of Quadratus plantae?
assists the flexor digitorum longus in flexing the toes
What innervates Quadratus plantae?
lateral plantar nerve
What supplies blood to Quadratus plantae?
lateral plantar a.
What is the origin of the Lumbricals of the foot?
tendons of the flexor digitorum longus