Lower Limb 4 Leg Flashcards
What artery supplies anterior compartment of leg?
Anterior Tibial Artery
What are the 4 muscles of anterior compartment of the leg?
Tibialis Anterior
Extensor Digitorum Longus
Extensor Hallucis Longus
Fibularis Tertius
Tibialis Anterior - Origin
Lateral condyle of tibia
Upper half of tibia
Tibialis Anterior - Insertion
Medial Cuneiform
1st Metatarsal bone
Tibialis Anterior - Innervation
Deep Fibular Nerve (L5-S2)
Tibialis Anterior - Action
Dorsiflexion of foot
Inversion of foot
Extensor Digitorum Longus - Origin
Anterior lateral condyle of tibia
anterior shaft of fibula
Superior 3/4 of interosseous membrane
Extensor Digitorum Longus - Insertion
Dorsal surface - Middle and distal phalanges of digits 2-5
Extensor Digitorum Longus - Innervation
Deep Fibular Nerve (L5-S2)
Extensor Digitorum Longus - Action
Extension of toes 2-5
Dorsiflexion of foot
Extensor Hallucis Longus - Origin
Middle portion of anterior fibula
Middle portion of interosseous membrane
Extensor Hallucis Longus - Insertion
Dorsal side of base of distal phalanx of big toe
Extensor Hallucis Longus - Innervation
Deep Fibular nerve (L5-S2)
Extensor Hallucis Longus - Action
Extends big toe
Dorsiflexion of foot
Fibularis Tertius - Origin
Distal anterior surface of fibula
Adjacent interroseous membrane
Fibularis Tertius - Insertion
Dorsal Surface of Metatarsal 5
Fibularis Tertius - Innervation
Deep Fibular Nerve (L5-S2)
Fibularis Tertius - Action
Eversion
Dorsiflexion of foot
Describe the origin and course of anterior tibial artery
Arises from popliteal artery and passes from posterior to anterior compartment via hiatus in interroseous membrane
Lies deep to extensor digitorum longus and continues as dorsalis pedis artery
What artery supplies the lateral compartment?
Fibular Artery
Name the muscles of lateral compartment
Fibularis Longus
Fibularis Brevis
Fibularis Longus - Origin
Superior and lateral surface of fibula and lateral tibial condyle
Fibularis Longus - Insertion
Plantar side of metatarsal 1 and medial cuneiform
Fibularis Longus - Innervation
Superficial Fibular Nerve (L4-S1)
Fibularis Longus - Action
Eversion of foot
Plantarflexion of foot
Supports lateral and transverse arch of foot