Lower Leg Muscles - Anterior Compartment Flashcards
Tibialis Anterior m. - origin
Lateral condyle and superior half of lateral surface of tibia and interosseous membrane
Tibialis Anterior m. - insertion
medial and inferior surfaces of medial cuneiform and base of 1st MT
Tibialis Anterior m., Extensor digitorum longus m., Extensor hallucis longus m., Fibularis tertius m. - nerve
Deep fibular n. (L4, 5)
Tibialis Anterior m. - action
- DF ankle
- Flex foot
Tibialis Anterior m. - blood supply
- Anterior tibial a., anterior tibial recurrent a., medial malleolar network
Extensor digitorum m. - origin
Lateral condyle of tibia and superior 3/4 of medial surface of fibula and interosseous membrane
Extensor digitorum longus m. - insertion
Middle and distal phalanges of lateral 4 digits
Extensor digitorum longus m. - action
- Extends lateral 4 digits
- DF ankle
Extensor digitorum longus m. - blood supply
Anterior tibial a., perforating branch of fibular a., lateral malleolar network
Extensor hallucis longus m. -origin
Middle part of anterior surface of fibula and interosseous membrane
Extensor hallucis longus m. - insertion
Dorsal aspect of base of distal phalanx of great toe
Extensor hallucis longus m. - action
- Extends great toe
- DF ankle
Extensor hallucis longus m. -blood supply
Anterior tibial a., perforating branch of fibular a., medial malleolar network
Anterior Compartment muscles
- Anterior tibialis m.
- Extensor digitorum longus m.
- Extensor hallucis longus m.
- Fibularis tertius m.
Fibularis tertius m. - origin
Inferior third anterior surface of fibula and interosseous membrane