MSK Session 10- The Anterolateral Leg And The Dorsum Of The Foot Flashcards
What is the action of the anterior leg muscles? (2)
- dorsiflexion of the foot at the ankle joint
- inversion of the foot at the ankle joint
What are the 4 anterior leg muscles?
Tibialis anterior
Extensor digitorum longus
Extensor hallicus longus
Fibularis tertius
What is the innervation to the anterior leg muscles?
Deep fibular never
What is the arterial supply to the anterior leg muscles?
Anterior tibial artery
What are the two lateral leg muscles?
Fibularis longus and brevis
Which lateral leg muscle is most superficial?
Fibularis longus
What is the action of the lateral leg muscles? (2)
Plantarflexion (weak)
Eversion of the foot
What is the innervation to the lateral leg muscles?
Superficial fibular nerve
What is the other function of extensor hallicus longus? (Besides dorsiflexion)
Extension of the great toe
What is the other function of extensor digitorum longus? (Besides dorsiflexion)
Extension of the lateral 4 toes
What is the purpose of the superior and inferior extensor retinaculas?
They bind the tendons of the anterior compartment muscles before and after they cross the ankle joint to prevent them from bow stringing during dorsiflexion.
What is the course of the great saphenous vein from the dorsal venous arch?
It travels up the medial side of the leg and drains into the femoral vein.
What is the course of the small saphenous vein from the dorsal venous arch?
It travels up the lateral side of the leg and drains into the popliteal vein.
What does the anterior tibial artery become when it passes midway between the malleoli?
Dorsalis pedis artery
What does the anterior tibial artery arise from?
The popliteal artery
