Muscles Of Foot And Ankle Flashcards
Abductor hallucis origin
Oblique head: bases of metatarsals 2-4
Transverse head: plantar ligaments of MTP joint
Abductor hallucis insertion
Tendons of both heads attach to lateral side of base of proximal phalanx of 1st digit
Abductor hallucis action
Adduct first digit
Flexor digitorum brevis origin
Medial tubercle of tuberosity of calcaneus
Plantar aponeurosis
Intermuscular septa
Flexor digitorum brevis insertion
Both sides of middle phalanges of lateral four digits
Flexor digitorum brevis action
Flexes lateral four digits at MTP and IP joints
Abductor digiti minimi origin
Medial and lateral tubercles of tuberosity of calcaneus
Plantar aponeurosis
Intermuscular septa
Abductor digiti minimi insertion
Lateral side of base of proximal phalynx of 5th digit
Abductor digiti minimi action
Abducts and flexes little toes at MTP and IP joints
Quadratus plantae origin
Medial surface and lateral margin of plantar surface and calcaneus
Quadratus plantae insertion
Posterior lateral margin of tendon of flexor digitorum longus
Quadratus plantae action
Assist flexor digitorum longus in flexing lateral four digits at MTP and IP joints
Lumbricals origin
Tendons of flexor digitorum longus
Lumbricals insertion
Medial aspect of expansion overall lateral four digits
Lumbricals action
Flex proximal IP joint
Extend middle and distal IP joints of lateral four digits
Flexor hallucis brevis origin
Plantar surface of cuboid and lateral cuneiforms
Flexor hallucis brevis insertion
Both sides of base of proximal phalanx of 1st digit
Flexor hallucis brevis action
Flexes proximal IP joint of 1st digit
Adductor hallucis origin
Medial tubercle of tuberosity of calcaneus
Flexor retinaculum
Plantar aponeurosis
Adductor hallucis insertion
Medial side of base of proximal phalanx of 1st digit
Adductor hallucis action
Abducts and flexes 1st digit at MTP and IP joints
Flexor digiti minimi brevis origin
Base of 5th metatarsal
Flexor digiti minimi brevis insertion
Base of proximal phalanx of 5th digit
Flexor digiti minimi brevis action
Adduct and flex digits 3-5 at MTP joints
Plantar interossei origin
Plantar aspect of medial side of shafts of metatarsals
Plantar interossei insertions
Medial sides of bases of phalanges of 3-5 digits
Plantar interossei action
Adduct and flex digits 3-5 at MTP joints
Dorsal interossei origin
Adjacent sides of shafts of metatarsals 1-5
Dorsal interossei insertion
1st medial side of proximal phalanx of 2nd digit
2-4 lateral side of digits
Dorsal interossei action
Abduct and flex digits 2-4 at MTP joints
Extensor digitorum brevis origin
Calcaneus
Extensor retinaculum
Extensor digitorum brevis insertion
Long extensor tendons of three intermediate digits
Extensor digitorum brevis action
Aids EDL in extending the ties at the MTP and IP joints
Extensor hallucis brevis origin
Calcaneus
Extensor retinaculum
Extensor hallucis brevis insertion
Dorsal aspect of base of proximal phalynx of great toe
Extensor hallucis brevis action
Aids EHL in extending the great toe at the MTP joint
Tibialis anterior origin
Lateral Condyle and superior half of lateral surface of tibia
Interosseous membrane
Tibialis anterior insertion
Medial and inferior surfaces of medial cuneiform and base of 1st metatarsal
Tibialis anterior action
Dorsiflexion
Inverts subtalar joint
Extensor hallucis longus origin
Middle part of anterior surface of fibula
Interosseous membrane
Extensor hallucis longus insertion
Dorsal aspect of base of distal phalanx of great toe
Extensor hallucis longus action
Extends great toe
Dorsiflexion
Extensor digitorum longus origin
Lateral Condyle of tibia and superior three quarters of medial surface of fibula
Interosseous membrane
Extensor digitorum longus insertion
Middle and distal phalanges of lateral four digits
Extensor digitorum longus action
Extends lateral four digits
Dorsiflexion
Fibularis tertius origin
Inferior third of anterior surface of fibula
Interosseous membrane
Fibularis tertius insertion
Dorsum of base of 5th metatarsal
Fibularis tertius action
Dorsiflexion
Eversion of subtalar joint
Fibularis longus origin
Hear and superior two thirds of lateral surface of fibula
Fibularis longus insertion
Base of 1st metatarsal and medial cuneiform
Fibularis longus action
Eversion of subtalar joint
Fibularis brevis origin
Inferior 2/3 of lateral surface of fibula
Fibularis brevis insertion
Dorsal surface of tuberosity on lateral side of base of 5th metatarsal
Fibularis brevis action
Eversion of subtalar joint
Gastrocnemius origin
Lateral head: lateral aspect of lateral Condyle of femur
Medial head: popliteal surface of femur, superior to medial Condyle
Gastrocnemius insertion
Posterior surface of calcaneus via Achilles tendon
Gastrocnemius action
Plantar flexion when knee is extended
Flexes knee joint
Soleus origin
Posterior aspect of fibula head
Superior aspect of posterior surface of fibula
Soleal line and middle third of medial border of tibia
Soleus insertion
Posterior surface of calcaneus via Achilles tendon
Soleus action
Plantar flexion
Stabilizes ankle joint
Plantaris origin
Inferior end of lateral supracondylar line of femur
Oblique popliteal ligament
Plantaris insertion
Posterior surface of calcaneus via Achilles tendon
Plantaris action
Weakly assists gastric in plantar flexion
Popliteus origin
Lateral surface of lateral Condyle of femur and lateral meniscus
Popliteus insertion
Posterior surface of tibia
Superior to soleal line
Popliteus action
Weakly flexes knee joint and unlocks it
Flexor hallucis longus origin
Inferior 2/3 of posterior surface of fibula
Inferior part of Interosseous membrane
Flexor hallucis longus insertion
Base of distal phalanx of great toe
Flexor hallucis longus action
Flexes great toe at all joints
Weak plantar flexion
Supports medial longitudinal arch
Flexor digitorum longus origin
Medial part of posterior surface of tibia inferior to soleal line
Flexor digitorum longus insertion
Bases of distal phalanges of lateral four digits
Flexor digitorum longus action
Flexes lateral four digits
Plantar flexion
Supports longitudinal arches of foot
Tibialis posterior origin
Interosseous membrane
Posterior surface of tibia inferior to soleal line
Posterior surface of fibula
Tibialis posterior insertion
Tuberosity of navicular, cuneiform, cuboid, and sustentaculum tali of bases 2-4 metatarsals
Tibialis posterior action
Plantar flexion
Inversion
Maintains medial longitudinal arch