Posterior Leg Muscles Flashcards
Popliteus
O: Lateral condyle of femur
I: Posterior surface of proximal tibial shaft
A: Flexion of leg at knee, Internal rotation of leg at knee
Tibialis Posterior
O: Interosseous membrane, adjacent shafts of tibia and fibula
I: Navicular, 3 cuneiforms (medial, lateral, intermediate), cuboid, bases of 2-4th metatarsal bones
A: Inversion of foot at ankle, Plantarflexion of foot at ankle
Gastrocnemius
O: Posterior surface of lateral femoral epicondyle (lateral head), Posterior surface of medial femoral condyle (medial head), Popliteal surface of femoral shaft
I: Calcaneal tuberosity
A: Flexion of leg at knee, Plantarflexion of foot at ankle
Soleus
O: Posterior head and proximal shaft of fibula, adjacent posteromedial shaft of fibula
I: Calcaneal tuberosity
A: Plantarflexion of foot at ankle
Fibularis Longus
O: Head and proximal shaft of lateral fibula
I: Base of first metatarsal bone and medial cuneiform
A: Plantarflexion of foot at ankle, Eversion of foot at ankle, Longitudinal and transverse arch support
Fibularis Brevis
O: Midlateral margin of fibula
I: Base of fifth metatarsal toe
A: Plantarflexion of foot at ankle, Eversion of foot at ankle
Plantaris
O: Lateral supracondylar ridge
I: Posterior surface of calcaneus
A: Plantarflexion of foot at ankle, Flexion of leg at knee
Flexor Digitorum Longus
O: Posteromedial surface of tibia
I: Inferior surface of distal phalanges, toes 2-5
A: Plantarflexion of foot at ankle, Flexion of distal phalanges of toes 2-5
Flexor Hallucis Longus
O: Posteromedial surface of fibula
I: Inferior surface of distal phalanx of toe 1
A: Plantarflexion of foot at ankle, Flexion at distal phalanx of toe 1
Fibularis Tertius
O: Distal anterior border of fibula
I: Base of fifth metatarsal
A: Eversion of foot at ankle, Dorsiflexion of foot at ankle
