Lower limb 3 Flashcards
3 compartments of anterior leg
anterior
posterior
lateral
4 muscles in anterior leg
tibialis anterior
extensor digitorum longus
extensor hallicus longus
fibularis tertius
Anterior compartment of anterior leg main actions
dorsiflex ankle
extend toes
Innervation of anterior compartment of leg
deep fibular nerve from common fibular
Terminal branch of popliteal artery supplying anterior leg
anterior tibial artery
Which artery runs midway between malleoli?
dorsalis pedis from anterior tibial artery
2 muscles of lateral compartment of leg
fibularis longus
fibularis brevis
Action of lateral compartment of leg muscles
evert foot and weakly plantarflex ankle
Which fibular nerve supplies lateral compartment?
superficial
Common fibular nerve injury
anterior and lateral muscles affected
foot drop
Articular surfaces of ankle
distal end of tibia and fibula
superior part of talus bone
When is malleolar grip tightest?
dorsiflexion
When is the ankle joint unstable?
plantarflexion
Which ligament of ankle is weakest?
lateral
Which ligament of ankle is also known as deltoid ligament?
medial