first 13 muscles for foot and leg Flashcards
gastrocnemius origin
Long head: lateral aspect of lateral condyle of femur
Short head: popliteal surface above medial condyle of femur
gastrocnemius insertion
posterior aspect of calcaneus via calcaneal tendon
gastrocnemius actoin
plantar flexes,
assists in knee flexion
soleus origin
posterior aspect of fibular head, proximal 1/4 fibular posterior surface, soleal line of tibia
Soleus insertion
Posterior aspect of
calcaneus via calcaneal
tendon
Soleus action
plantarflexes foot,
stabilizes foot over ankle
plantaris origin
inferior end of lateral supracondylar
line of femur and oblique popliteal
ligament
plantaris insertion
Posterior aspect of
calcaneus via calcaneal
tendon
plantaris action
weakly assists
gastrocnemius
Popliteus origin
lateral aspect of femur, lateral meniscus
Popliteus insertion
posterior tibia superior
to soleal line
Popliteus action
weak flexion of knee,
unlocks knee by rotating
femur on locked tibia
Tibialis Posterior origin
Posterior tibia inferior to soloeal line,
interosseous membrane, proximal half
of posterior fibula
Tibialis Posterior insertion
Tuberosity of navicular
bone, all cuneiforms,
cuboid, bases of 2-4
metatarsals
Tibialis Posterior action
plantarflexes foot, inverts
foot
Flexor digitorum
longus origin
Medial posterior tibia inferior to soleal line
Flexor digitorum
longus insertion
plantar bases of distal
phalanges of digits 2-5
Flexor digitorum
longus action
Flexes digits 2-5,
plantarflexes foot,
supports longitudinal
arch
Flexor Hallucis longus origin
Distal 2/3 posterior fibula and
interosseous membrane
Flexor Hallucis longus insertion
base of distal phalanx of
big toe
Flexor Hallucis longus action
flexes big toe, weak
plantarflexion
fibularis longus origin
head and proximal 2/3 of lateral fibula
fibularis longus insertion
plantar base of
metatarsal 1 and medial
cuneiform
fibularis longus action
everts foot, weak
plantarflexion