Muscles of the anterior and lateral leg Flashcards
What are the muscles of the lateral compartment of the leg?
- Fibularis longus
- Fibularis brevis
What are the muscles of the anterior compartment of the leg?
- Tibialis anterior
- Extensir hallicus longus
- Extensor digitorum longus
- Fibularis tertius
What are the origin and insertion of Tibialis anterior?
- Origin: lateral condyle and superior half of lateral surface of tibia
- Insertion: medial and inferior surfaces if medial cuneiform and base of first metatarsal
What is the action of Tibialis anterior?
- Dorsiflex foot at ankle
- Inverts foot
What are the origin and insertion of EHL?
- Origin: middle part of anterior surface if fibula and interosseous membrane
- Insertion: Dorsal aspect of base of distal phalanx of great toe
What is the action of EHL?
- Extends great toe
- Dorsiflexes foot at ankle
What are the origin and insertion EDL?
- Origin: lateral condyle of tibia and superior three quarters of anterior surface of interosseous membrane of fibula
- Insertion: Middle and distal phalanges if lateral four digits
What is the action of EDL?
- Extends lateral four digits
- Dorsiflexes foot at ankle
What are the origin and insertion of Fibularis tertius?
- Origin: inferior third if anterior surface if fibula and interosseous membrane
- Insertion: Dorsum of base of fifth metatarsal
What is the action of Fibularis tertius?
- Dorsiflexes foot at ankle
- Aids in eversion of foot
What are the origin and insertion of Fibularis longus?
- Origin: head and superior two thirds if lateral surface of tibia
- Insertion: base if first metatarsal and medial cuneiform
What is the action of Fibularis longus?
- Everts foot
- Weakly plantarflexes foot at ankle
What are the origin and insertion of Fibularis brevis?
- Origin: Head and superior two thirds of lateral surface of fibula
- Insertion: Dorsal surface of tuberosity in lateral side of fifth metatarsal
What is the action of Fibularis brevis?
- Everts foot
- weakly plantarflexes foot at ankle
