Anterior Leg Flashcards
What is the origin of the tibialis anterior?
Lateral surface of tibia
Where does the tibialis anterior insert?
Medial cuneiform and base of metatarsal I
What are the actions of tibialis anterior?
Dorsiflexion and inversion of foot
What is the nerve supply to tibialis anterior?
Deep fibular nerve
What is the origin of the extensor digitorum longus?
Lateral condyle of tibia and medial fibula
Where does EDL insert?
4 lateral toes
What are the actions of EDL?
Extension of 4 lateral toes and dorsiflexion
What is the nerve supply to EDL?
Deep fibular nerve
What is the origin of extensor hallucis longus?
Medial surface of fibula shaft
Where does EHL insert?
Distal phalanx of great toe
What are the actions of EHL?
Extension of great toes and dorsiflexion
What is the nerve supply to EHL?
Deep fibular nerve
How many muscles are in the anterior leg compartment?
4
What is the origin of fibularis (peroneus) tertius?
Medial shaft of fibula
What is the insertion of FT?
Metatarsal V
What are the actions of FT?
Eversion and dorsiflexion
What is the nerve supply to FT?
Deep fibular nerve
All the muscles of the anterior leg compartment are innervate by ….
Deep fibular nerve
Name the muscles of the anterior leg compartment
Tibialis anterior Extensor digitorum longus Extensor hallucis longus Fibularis tertius (peroneus)
What is footdrop?
Permanent plantarflexion
Damage to common fibular nerve (most common) or the deep fibular nerve
Paralysis of anterior compartment of leg
Which muscle is the strongest dorsiflexor of the foot?
Tibialis anterior
Name the 3 main arteries of the leg
Anterior tibial artery
Posterior tibial artery
Peroneal artery
Describe the route of the great saphenous vein
Passes anterior to medial malleolus Up the medial leg Passes posterior to medial femoral condyle Up the medial thigh Drain into femoral vein
How does the common peroneal nerve enter the anterior compartment?
Wraps around the head of the fibula
Splits into superficial and deep nerves
Describe the peripheral nerve territory of the saphenous nerve
Medial leg both anterior and posterior
Describe the peripheral nerve territory of the lateral sural nerve
Superior, lateral anterior and posterior leg
Describe the peripheral nerve territory of the superficial peroneal nerve
Anterior, inferior lateral leg
And most of the dorsum of foot
Describe the peripheral nerve territory of the deep peroneal nerve
Small triangle of dorsum of foot between digits I and II
