Lower leg origin and insertions Flashcards
What is the origin of the tibialis anterior
lateral condyle and the superior half of the lateral tibia
what is the insertion of the tibialis anterior?
inferomedial base of cuniform and base of the 1st metatarsal
what is the nerve innervation of the tibialis anterior?
deep peroneal nerve (L4 and L5)
what is the action of the tibialis anterior?
dorsiflexion and inverts
what is the origin of the extensor hallicus longus?
middle portion of the anterior fibula and the interosseus membrane
what is the insertion of the extensor hallicus longus?
dorsal base of the distal great toe
what is the nerve innervation of the extensor hallicus longus?
deep peroneal (L5 and S1)
what is the action of the extensor hallicus longus?
dorsiflexion and extends the great toe
what is the origin of the fibularis tertius?
inferior 1/3 of the anterior fibula and the interosseus membrane
what is the insertion of the fibularis tertius?
dorsal base of the 5th metatarsal
what is the nerve innervation of the fibularis tertius?
deep peroneal (l4 and L5)
what is the action of the fibularis tertius?
dorsiflexion, eversion, preception
what is the origin of the extensor digitorum longus?
lateral condyle of the tibia, superior 3/4 of the medial surface of the fibula and interosseus membrane
what is the insertion of the extensor digitorum longus?
middle and distal phalanges of the last 4 digits
what is the nerve innervation of the extensor digitorum longus?
deep peroneal (l5 and s1)
what is the action of the extensor digitorum longus?
dorsiflexion and extends digits
What is the origin of the fibularis brevis?
inferior 2/3 of the lateral fibula
what is the insertion of the fibularis brevis?
lateral base of the 5th metatarsal
what is the nerve innervation of the fibularis brevis?
superficial peroneal (L5,S1,S2)
what is the action of the fibularis brevis?
everts the foot, weak plantarflexion, preception
what is the origin of the fibularis longus?
head and superolateral 2/3 of the fibula
what is the insertion of the fibularis longus?
dorsal base of the 1st metatarsal, medial cuniform
what is the nerve innervation of the fibularis longus?
superficial peroneal (L5, S1, S2)
what is the action of the fibularis longus?
everts, weak plantarflexion, preception
what is the origin of the plataris?
lateral supracondylar line of the femur and the oblique popliteal ligament
what is the insertion of the plantaris?
posterior calcaneous via CT
what is the nerve innervation of the plantaris?
tibial nerve (S1 and S2)
what is the action of the plantaris?
weak plantarflexion
what is the origin of the gastrocnemius?
medial: popliteal surface
lateral: lateral surface of the lateral condyle
what is the insertion of the gastroc?
posterior calcaneous via CT
what is the nerve innervation of the gastroc?
tibial nerve (S1 and S2)
what is the action of the gastroc?
plantarflexion when in KE and flexes the knee
what is the origin of the soleus?
posterior head of the fibula, soleal line, medial border of the tibia
what is the insertion of the soleus?
posterior calcanous via CT
what is the nerve innervation of the soleus?
tibial nerve (S1 and S2)
what is the action of the soleus?
plantarflexion when the knee is flexed
what is the origin of the popliteus?
lateral surface of the lateral condyle and the lateral meniscis?
what is the insertion of the popliteus?
superior soleal line and posterior surface of the tibia
what is the nerve innervation of the popliteus?
tibial nerve (L4 L5 and S1)
what is the action of the popliteus?
weak knee flexor, unlocks knee
what is the origin of the FDL?
posteromedial tibia inferior to the soleal line
what is the insertion of the FDL?
base of the distal phalanages
what is the nerve innervation of the FDL?
tibial nerve (S2 and S3)
what is the action of the FDL?
flexes toes, plantarflexion in KE and supports the longitundial arch
what is the origin of the flexor hallicus longus?
inferior 2/3 of the posterior fibula, IO membrane
what is the insertion of the flexor hallicus longus?
base of the distal phalynx of the great toe
what is the nerve innervation of the flexor hallicus longus?
tibial nerve S2 and S3
what is the action of the flexor hallicus longus?
flex the great toe, weak plantarflexion, support the longitundial arch.
what is the origin of the tibialis posterior?
interosseus membrane, posterior tibia inferior to the soleal line, posterior fibula
what is the insertion of the tibialis posterior?
tuberosity of the navicular, cuniform, cuboid and the base of the 2nd, 3rd, 4th metatarsal
what is the innervation of the tibialis posterior?
tibial nerve( l4 and l5 )
what is the action of the tibilais posterior?
plantarflexion and inverts the foot