foot muscles Flashcards
what muscles are on dorsal aspect and what are their innervation
-extensor hallucis brevis
-extensor digitorum brevis
deep fibular N
what muscles are in plantar layer 1
-abductor hallucis
-abductor digiti minimi
-flexor digitorum brevis
what muscles are in plantar layer 2
-quadratus plantae
-lumbricals (4)
what muscles are in plantar layer 3
-adductor hallucis
-flexor hallucis brevis
-flexor digiti minimi brevis
what muscles are in plantar layer 4
-plantar interossei
-dorsal interossei
extensor hallucis brevis origin insertion
o - calcaneus
i - proximal phalanx of 1st toe
extensor hallucis brevis action
extend 1st toe at MTP joint
extensor digitorum brevis origin insertion
o - calcaneus
i - middle phalanx of toes 2-5
extensor digitorum brevis action
extend toes 2-5 at MTP and PIP joints
abductor hallucis origin insertion
o - calcaneus and plantar aponeurosis
i - medial proximal phalax of 1st toe
abductor hallucis actions
abducts first toe at MTP joint
abductor digiti minimi origin insertion
o - calcaneus and plantar aponeurosis
i - lateral proximal phalanx of 5th toe
abductor digiti minimi actions
abducts 5th toe at MTP joint
flexor digitorum brevis origin insertion
o - calcaneus and plantar aponeurosis
i - middle phalanx of toes 2-5
flexor digitorum brevis action
flexes toes 2-5 at MTP and PIP joints
quadratus plantae origin insertion
o - calcaneus
i - flexor digitorum longus tendon
quadratus plantae actions
assists FDL straighten flexion of toes 2-5
lumbricals origin insertion
o - flexor digitorum longus tenon
i - extensor digitorum tendons on proximal phalanges of toes 2-5
lumbricals actions
flexes toes 2-5 at MTP joints
extends toes 2-5 at PIP and DIP joints
adductor hallucis origin insertion
o - metatarsals 2-4 (transverse head) and flibularis longus tendon (oblique head)
i - lateral proximal phalanx of 1st toe
adductor hallucis actions
adduct 1st toes at MTP joint
flexor hallucis brevis origin insertion
o - cuboid and cuneiform 3
i - medial and lateral sides of proximal phalanx of 1st toe
flexor hallucis brevis actions
flexes 1st toe at MTP joint
flexor digiti minimi brevis origin insertion
o - base of 5th metatarsal
i - lateral proximal phalanx of 5th toe
flexor digiti minimi brevis actions
flexes 5th toe ar MTP joint
plantar interossei origin insertion
o - metatarsals 3-5
i - proximal phalanges 3-5
plantar interossei actions
adduct toes 3-5 at MTP joints
dorsal interossei origin insertion
o - adjacent sides of metatarsals
i - proximal phalanges toes 2-4
dorsal intereossei actions
abducts toes 2-4 at MTP joints
which muscles are innervated by the medial plantar N
-abductor hallucis
-flexor digitorum brevis
-lumbricals 1,2
-flexor hallucis brevis
which muscles are innnervated by the lateral plantar N
-abductor digiti minimi
-quadratus plantae
-lumbricasl 3,4
-adductor hallucis
-flexor digiti minimi brevis
-plantar interossei
-dorsal interossei
