Feet Flashcards
(17 cards)
What muscles are in the first layer of the sole of the foot?
- abductor hallucis
- flexor digitorum brevis
- abductor digiti minimi
What muscles are on the dorsal aspect of the foot?
- extensor hallucis brevis
- extensor digitorum brevis
- dorsal interossei
- (EHB is actuallt part of EDB)
What muscles are in the second layer of the sole of the foot?
- quadratus plantae
- lumbricals
What muscles are in the third layer of the sole of the foot?
- Flexor hallucis brevis
- adductor hallucis
- flexor digiti minimi brevis
What muscles are in the fourth layer of the sole of the foot?
- plantar interossei
- dorsal interossei
Abductor hallucis origin, insertion, action, innervation
- medial tubercle tuberosity of calcaneous, flexor retinaculum, plantar aponeurosis
- media side base proximal phalanx of digit 1
- abduct and flex great toe
- medial plantar nerve
Flexor digitorum brevis origin, insertion, action, innervation
- medial tubercle of tuberosity of calcaneus, plantar aponeurosis, intermuscular septa
- both sides of base of proximal phalanges of lateral four digits
- flexes lateral four digits
- medial plantar nerve
Abductor digiti minimi origin, insertion, action, innervation
- medial and lateral tubercle of tuberosity of calcaneus, plantar aponeurosis, intermuscular septa
- lateral side of base of proximal phalanx of 5th digit
- abducts and flexes 5th digit
- lateral plantar nerve
Quadratus plantae origin, insertion, action, innervation
- medial aspect of plantar surface of calcaneus, lateral margin of plantar surface of calcaneus
- posteriolateral margin of tendon of flexor digitorum longus
- assists FDL in flexing lateral 4 digits
- lateral plantar nerve
Lumbricals origin, insertion, action, innervation
- tendons of flexor digitorum longus
- medial aspect of expansion over lateral four digits
- flex proximal phalanges, extend middle and distal phalanges of lateral four digits
- medial plantar nerve for medial one, lateral three are lateral plantar nerve
Flexor hallucis brevis origin, insertion, action, innervation
- plantar surfaces of cuboid, lateral cuneiform
- both sides of base of proximal phalanx of digit 1
- flexes proximal phalanx of 1st digit
- medial plantar nerve
Adductor hallucis origin, insertion, action, innervation
Origins:
- Oblique head: bases of metatarsals 2-4
- transverse head: plantar ligaments of 3rd-5th
metatarsophalangeal joints
- lateral side of base of proximal phalanx of 1st digit
- adducts 1st digit, assists in maintaining transverse arch of foot
- deep branch of lateral plantar nerve
Flexor digiti minimi brevis origin, insertion, action, innervation
- base of 5th metatarsal
- base of proximal phalanx of 5th digit
- flexes proximal phalanx of 5th digit
- superficial branch of lateral plantar nerve
Plantar interossei origin, insertion, action, innervation
- bases and medial sides of metatarsals 3-5
- medial sides of bases of proximal phalanges of 3-5th digits
- adduct digits 3-5, flex metatarsophalangeal joints
- lateral plantar nerve
Dorsal interossei origin, insertion, action, innervation
- adjacent sides of metatarsals 1-5
- first one: medial side of proximal phalanx of 2nd digit, second to fourth: lateral sides of 2-4 digits
- abducts digits 2-4 and flexes metatarsophalangeal joints
- lateral plantar nerve
What structures support the longitudinal arch of the foot?
- plantar calcaneonavicular ligament
- long plantar ligament
- plantar aponeurosis
- flexor hallucis longus (medial longitudinal arch)
- flexor digitorum longus
- tibialis posterior (medial longitudinal arch)
- tibialis anterior (medial longitudinal arch)
- quadratus plantae
What structures support the transverse arch of the foot?
- Fibularis longus
- adductor hallucis
- tibialis posterior
- deep transverse metatarsal ligaments
- plantar ligaments
