Leg and Foot Muscles Flashcards
Action of Abductor Digiti Minimi
Abducts and flexes 5th digit
Action of Abductor Hallucis
Abducts and flexes 1st digit
Action of Adductor Hallucis
Adducts 1st digit, supports transverse arch
Action of Dorsal Interossei
Abducts digits 2-4, flexes metatarsophalangeal joints
Action of Extensor Digitorum Longus
Extends digits 2-5, dorsiflexes ankle
Action of Extensor Digitorum Brevis
Extends digits 2-5, at MP and IP joints
Action of Extensor Hallucis Brevis
Extends great toe at MP joint
Action of Extensor Hallucis Longus
Extends great toe, dorsiflexes ankle
Action of Fibularis Tertius
Dorsiflexion and eversion
Action of Flexor Digitorum Brevis
Flexes digits 2-5
Action of Flexor Digiti Minimi Brevis
Flexes proximal phalanx of 5th digit
Action of Flexor Digitorum Longus
Flexes digits 2-5, plantarflexion, supports longitudinal arch of foot
Action of Flexor Hallucis Brevis
Flexes proximal phalanx of great toe
Action of Gastrocnemius
Plantarflexion, flexes knee
Action of Flexor Hallucis Longus
Flexes great toe, plantarflexes foot, supports longitudinal arch of foot
Action of Lumbricals (foot)
Flexes proximal phalanges, extends middle and distal phalanges of digits 2-5
Action of Peroneus Brevis
Eversion, plantarflexion
Action of Peroneus Longus
Eversion, plantarflexion
Action of Plantar Interossei
Adducts digits 2-4, flexes metatarsophalangeal joints
Action of Plantaris
Plantarflexion, flexes knee
Action of Popliteus
Knee flexion, unlocks knee by internally rotating the tibia during NWB flexion and externally rotates the femur during weight bearing flexion
Action of Quadratus Plantae
Flexes digits 2-5
Action of Soleus
Plantarflexion
Action of Tibialis Anterior
Dorsiflexion and Inversion
Action of Tibialis Posterior
Plantarflexion, inversion
Innervation of Abductor Digiti Minimi
Lateral plantar nerve (S2, S3)
Innervation of Abductor Hallucis
Medial plantar nerve (S2, S3)
Innervation of Adductor Hallucis
Deep branch of lateral plantar nerve (S2, S3)
Innervation of Dorsal Interossei
Lateral plantar nerve (S2, S3)
Innervation of Extensor Digitorum Brevis
Deep fibular nerve (L5 or S1 or both)
Innervation of Extensor Digitorum Longus
Deep fibular nerve (L5, S1)
Innervation of Extensor Hallucis Brevis
Deep fibular nerve (L5 or S1 or both)
Innervation of Extensor Hallucis Longus
Deep fibular nerve (L5, S1)
Innervation of Fibularis Tertius
Deep fibular nerve (L5, S1)
Innervation of Flexor Digiti Minimi Brevis
Superficial branch of lateral plantar nerve (S2, S3)
Innervation of Flexor Digitorum Brevis
Medial plantar nerve (S2, S3)
Innervation of Flexor Digitorum Longus
Tibial nerve (S2, S3)
Innervation of Flexor Hallucis Longus
Tibial nerve (S2, S3)
Innervation of Flexor Hallucis Brevis
Medial plantar nerve (S2, S3)
Innervation of Gastrocnemius
Tibial nerve (S1, S2)
Innervation of Lumbricals (foot)
Medial one: Medial plantar nerve (S2, S3) Lateral three: Lateral plantar nerve (S2, S3)
Innervation of Peroneus Brevis
Superficial Fibular nerve (L5, S1, S2)
Innervation of Peroneus Longus
Superficial Fibular nerve (L5, S1, S2)
Innervation of Plantar Interossei
Lateral plantar nerve (S2, S3)
Innervation of Plantaris
Tibial nerve (S1, S2)
Innervation of Popliteus
Tibial nerve (L4, L5, S1)
Innervation of Quadratus Plantae
Lateral plantar nerve (S2, S3)
Innervation of Soleus
Tibial nerve (S1, S2)
Innervation of Tibialis Anterior
Deep fibular nerve (L4,L5)
Innervation of Tibialis Posterior
Tibial nerve (L4, L5)
Insertion of Abductor Digiti Minimi
Lateral side of base of proximal phalanx of 5th digit

Insertion of Abductor Hallucis
Medial side of base of proximal phalanx of 1st digit

Insertion of Adductor Hallucis
Lateral side of base of proximal phalanx of 1st digit

Insertion of Dorsal Interossei
1st: medial side of proximal 2nd phalanx 2-4: lateral sides of digits 2-4

Insertion of Extensor Digitorum Brevis
Long extensor tendons of digits 2-5

Insertion of Extensor Digitorum Longus
Middle and distal phalanges of digits 2-5

Insertion of Extensor Hallucis Brevis
Dorsal aspect of base of proximal phalanx of great toe

Insertion of Extensor Hallucis Longus
Dorsal aspect, base of great toe

Insertion of Fibularis Tertius
Dorsum of base of 5th metatarsal

Insertion of Flexor Digiti Minimi Brevis
Base of proximal phalanx of 5th digit

Insertion of Flexor Digitorum Brevis
Side of middle phalanges of digits 2-5

Insertion of Flexor Digitorum Longus
Base of distal phalanges 2-5

Insertion of Flexor Hallucis Brevis
Both sides of proximal phalanx of 1st digit

Insertion of Flexor Hallucis Longus
Base of distal phalanx of great toe

Insertion of Gastrocnemius
Posterior Calcaneus

Insertion of Lumbricals (foot)
Medial aspect of expansion of digits 2-5

Insertion of Peroneus Brevis
Dorsal surface, lateral side of tuberosity on base of 5th metatarsal

Insertion of Peroneus Longus
Base of 1st metatarsal and 1st cuneiform

Insertion of Plantar Interossei
Medial sides of base of phalanges 3-5

Insertion of Plantaris
Posterior Calcaneus

Insertion of Popliteus
Posterior tibia superior to soleal line

Insertion of Quadratus Plantae
Posterior margin of tendon of Flexor Digitorum Longus

Insertion of Soleus
Posterior Calcaneus

Insertion of Tibialis Anterior
Medial and inferior surface of 1st cuneiform, base of 1st metatarsal

Insertion of Tibialis Posterior
Navicular tuberosity, Cuboid, Cuneiform 1-3, base of metatarsals 2-4

Origin of Abductor Digiti Minimi
Medial and lateral tubercles of calcaneal tuberosity, plantar aponeurosis, intermuscular septa

Origin of Abductor Hallucis
Medial tubercle of calcaneal tuberosity, flexor retinaculum, plantar aponeurosis

Origin of Adductor Hallucis
Oblique Head: bases of metatarsals 2-4
Transverse Head: plantar ligaments of metatarsophalangeal joint

Origin of Dorsal Interossei
Adjacent sides of metatarsals 1-5

Origin of Extensor Digitorum Brevis
Calcaneus, interosseous talocalcaneal ligament, stem of inferior extensor retinaculum

Origin of Extensor Digitorum Longus
Lateral tibial condyle, interosseous membrane, superior 3/4 of medial fibula

Origin of Extensor Hallucis Brevis
Calcaneus, interosseous talocalcaneal ligament, stem of inferior extensor retinaculum

Origin of Extensor Hallucis Longus
Middle part of anterior fibula, interosseous membrane

Origin of Fibularis Tertius
Inferior 2/3 of anterior fibula, interosseous membrane

Origin of Flexor Digiti Minimi Brevis
Base of 5th metatarsal

Origin of Flexor Digitorum Brevis
Medial tubercle of calcaneal tuberosity, plantar aponeurosis, intermuscular septa

Origin of Flexor Digitorum Longus
Medial posterior surface of tibia, inferior to soleal line, broad aponeurosis to fibula

Origin of Flexor Hallucis Brevis
Plantar surface of cuboid and lateral cuneiforms

Origin of Flexor Hallucis Longus
Inferior 2/3 of posterior fibula, inferior interosseous membrane

Origin of Gastrocnemius
Lateral head: lateral aspect of lateral femoral condyle Medial head: Popliteal surface, superior to medial femoral condyle

Origin of Lumbricals (foot)
Tendon of Flexor Digitorum Longus

Origin of Peroneus Brevis
Inferior 2/3 of lateral fibular

Origin of Peroneus Longus
Superior 2/3 of lateral fibular head

Origin of Plantar Interossei
Bases and medial sides of metatarsals 3-5

Origin of Plantaris
Inferior, lateral supracondylar line, oblique popliteal ligament

Origin of Popliteus
Lateral surface of lateral femoral condyle, lateral mensicus

Origin of Quadratus Plantae
Medial surface, lateral margin of plantar calcaneus

Origin of Soleus
Posterior Fibular head, superior 1/4 posterior fibula, soleal line, medial tibia

Origin of Tibialis Anterior
Lateral tibial condyle, superior 1/2 of lateral tibia, interosseous membrane

Origin of Tibialis Posterior
Interosseous membrane, posterior tibia inferior to soleal line, posterior fibula
