Anterior compartment Flashcards
Tibialis anterior insertion
medial and plantar surface of medial cuneiform
medial base of 1st metatarsal
Tibialis anterior action
Talocrural joint - dorsiflexion
Subtalar joint - inversion
Extensor hallucis longus origin
Middle third of the medial surface of fibula and interosseous membrane
Extensor hallucis longus insertion
1st toe at the dorsal aponeurosis and base of distal phalanx
Extensor hallucis longus action
Talocrural joint - dorsiflexion
Subtalar joint - eversion and inversion depending on initial position of the foot
Extends MTP and IP of the big toe
Extensor digitorum longus origin
head and medial surface of fibula
lateral condyle of the tibia
interosseous membrane
Extensor digitorum longus insertion
2nd to 5th toes at dorsal aponeuroses at the bases of distal phalanges
Extensor digitorum longus action
Talocrural joint - dorsiflexion
Subtalar joint - eversion
Extends the MTP and IP joints of the 2nd to 5th toes
Fibularis (peroneus) tertius origin
anterior border of distal fibula
fibularis (peroneus) tertius insertion
base of 5th metatarsal
Fibularis (peroneus) tertius action
Talocrural joint - dorsiflexion
Subtalar joint - eversion
Tibialis anterior, extensor hallucis longus, extensor digitorum longus, fibularis (peroneus) tertius innervation
Deep Fibular n.
L4, L5
Tibialis anterior origin
upper two thirds of lateral surface of tibia, interosseous membrane, and superficial crural fascia