Muscles of the anterior and lateral compartments of the leg Flashcards
Tibialis anterior Proximal
Lateral condyle and superior 2/3 of lateral surface of tibia and interosseous membrane
name the muscles in the anterior compartment
Tibialis anterior, extensor digitorum longus, extensor hallucis longus, Fibularis tertius
Tibialis anterior distal
Medial and inferior surfaces of medial cuneiform and base of 1st metatarsal
Tibialis anterior innervation
Deep Fibular nerve L4, L5
Tibialis anterior action
Dorsiflexes ankle; inverts foot and supports medial longitudinal arch of foot
Extensor Hallicis Longus proximal
Middle part of anterior surface of fibula and interosseous membrane
Extensor Hallicis Longus distal
Dorsal aspect of base of distal phalanx of great toe (Hallux)
Extensor Hallicis Longus innervation
Deep fibular nerve L5, S1
Extensor Hallicis Longus action
Extends great toe, dorsiflexes ankle
Extensor Digitorum Longus proximal
Lateral condyle of tibia and superior 2/3 of anterior surface of fibula and interosseous membrane
Extensor Digitorum Longus distal
Middle and distal phalanges of lateral four digits
Extensor Digitorum Longus innervation
Deep fibular nerve L5, S1
Extensor Digitorum Longus action
Extends lateral four digits, dorsiflexes ankle
what are the muscles of the lateral compartment of the leg?
Fibularis longus and brevis
Fibularis longus proximal
Head and superior 2/3s of lateral surface of fibula
Fibularis longus distal
Base of 1st metatarsal and medial cuneiform
Fibularis longus innervation
Superficial fibular nerve L5, S1, S2
Fibularis longus action
evert foot, weakly plantarflex ankle, supports transverse arch of foot
Fibularis Brevis proximal
middle part of lateral surface of fibula
Fibularis Brevis distal
Dorsal surface of tuberosity of base of 5th metatarsal
Fibularis Brevis innervation
Superficial fibular nerve L5, S1, S2
Fibularis Brevis action
Evert foot, weakly plantarflex ankle
