Dorsiflexion muscles Flashcards
Name the dorsiflexion muscles
Tibialis anterior
extensor digitorum longus
extensor hallucis longus
poroneus tertius
Tibialis anterior
o- upper 1/2 to 2/3 lateral surface of tibia and adjacent interosseous membrane
I- medial surface of medial cuneiform and base of 1st MT
A- dorsiflexion of ankle and inversion of the foot
Deep Peroneal Nerve L4/L5
Extensor Digitorum Longus
O- upper 2/3 anterior surface of the fibula
upper part of the interosseous membrane
lateral tibial condyle
I- extensor hood, base of middle and distal phalanges of toes 2-5
action- extension of lateral 4 toes at MTP joint
dorsiflexion of ankle
extension at IP joint
Deep peroneal nerve L5,S1
Extensor Hallucis Longus
O- Middle 1/2 of anterior surface of fibula and adjacent interosseous membrane
I- dorsal surface, base of distal phalanx of the great toe
A- extends all joints of the great toe
dorsiflexor
Deep Peroneal Nerve L5, S1
Poroneus Tertius
O- lower 1/4 of medial fibula and adjacent interosseous membrane
I- base of 5th mT, medial and dorsal aspect
A- weak dorsiflexor of the foot
Weak Evertor of the foot
Deep Peroneal Nerve L5,S1
What can dorsiflexion be limited by?
posterior part of the deltoid ligament
calcenofibular ligament
wedging of the talus between the malleoli
normal range of movement
20 degrees
