Foot (muscles) Flashcards
intrinsic muscles of foot: list on dorsal aspect
- extensor digitorum brevis
- extensor hallucis brevis
intrinsic muscles of foot: how many layers?
4 layers
intrinsic muscles of foot: muscles in 1st layer
- abductor hallucis
- flexor digitorum brevis
- abductor digiti minimi
intrinsic muscles of foot: muscles in 2nd layer
- quadratus plantae
- lumbricals
intrinsic muscles of foot: muscles in 3rd layer
- flexor hallucis brevis
- adductor hallucis
- flexor digiti minimi brevis
intrinsic muscles of foot: 4th layer
- dorsal interossei
- plantar interossei
extensor digitorum brevis: location
dorsal aspect, intrinsic muscle
extensor digitorum brevis: innervation
deep fibular n
extensor digitorum brevis: action
extension of toes 2-4
extensor hallucis brevis: location
dorsal aspect, intrinsic muscle
extensor hallucis brevis: innervation
deep fibular n
extensor hallucis brevis: action
extension of metatarsalphalangeal joint of great toe
abductor hallucis: location
1st layer, sole of foot
abductor hallucis: innervation
tibial n
abductor hallucis: action
abduction and flexion of MTP joint of great toe
flexor digitorum brevis: location
1st layer, sole of foot
flexor digitorum brevis: innervation
tibial n
flexor digitorum brevis: action
flexion of toes 2-5, proximal interphalangeal joint
abductor digiti minimi: location
1st layer, sole of the foot
abductor digiti minimi: innervation
tibial n
abductor digiti minimi: action
abduction and flexion of MTP joint of little toe
quadratus plantae: location
2nd layer, sole of foot
quadratus plantae: innervation
tibial n
quadratus plantae: action
assists FDL
lumbricals: location
2nd layer, sole of foot
lumbricals: innervation
tibial n
lumbricals: action
flexes MTP joint and extends IP joint
flexor hallucis brevis: location
3rd layer, sole of foot
flexor hallucis brevis: innervation
tibial n
flexor hallucis brevis: action
flexes MTP joint of great toe
adductor hallucis: location
3rd layer, sole of foot
adductor hallucis: innervation
tibial n
adductor hallucis: action
adducts big toe
flexor digiti minimi: location
3rd layer, sole of foot
flexor digiti minimi: innervation
tibial n
flexor digiti minimi: action
flexes lil toe
dorsal interossei: location
4th layer, dorsal aspect
dorsal interossei: innervation
- tibial n
- 1st, 2nd also from deep fibular n
dorsal interossei: action
abducts toes 2-4, flexes MTP j, extends IP joint
plantar interossei: location
4th layer, sole of foot
plantar interossei: innervation
tibial n
plantar interossei: action
- adducts toes 3-5
- flexes MTP j
- extends IP j
how many arches are there:
2 longitudinal, 1 transverse arch
name arches:
- medial longitudinal
- lateral longitudinal
- transverse
bones: medial longitudinal arch
- talus
- calcaneus
- navicular
- cuneiforms
- metatarsals 1-3
bones: lateral longitudinal arch
- calcaneus
- cuboid
- metatarsals 4-5
bones: transverse arch
- cuboid
- cuneiform
- metatarsal bones
support structures: ligaments- medial longitudinal arch
- plantar calcaneonavicular (spring)
- deltoid
support structures: ligaments- lateral longitudinal arch
- long
- short plantar lig
support structures: ligaments- transverse arch
- deep transverse
- long and short plantar
flat feet eg:
- no arch
- babies look like it
- pain, no support
