The Leg Flashcards
Compartments of the leg
Anterior
Lateral
Posterior (deep)
Posterior (superficial)
Fascia of the leg
Crural fascia
Membranes separating compartments
Interosseus (A/P(deep)
Transverse intermuscular spetum (Posterior)
Lateral Intramuscular septum (Lat/post (sup)
anterior intramuscular septum (ant/lat)
Nerves and arteries of each compartment
Anterior - anterior tibial artery, deep fibular nerve
Posterior (deep) - Fibular artery, posterior tibial artery, tibial nerve
Lateral - superficial fibular nerve
Anterior compartment of leg actions innervation and blood supply
Dorsiflexion of foot and extension of toes
Deep fibular nerve
Anterior tibial artery
Tendons of anterior leg compartment
Pass anterior to ankle joint and deep to extensor retinacula
Tibialis anterior
Dorsiflexes and inverts foot
Extensor digitorum longus
Extends lateral 4 toes with continued action dorsiflexes foot
Extenser hallucis longus
Extends the great toe and can dorsiflex
Muscles of anterior leg
Tibialis anterior
Extensor digitorum longus
Extensor hallicus longus
Fibularis tertius
Fibularis tertius
Dorsiflexes and everts foot
Drop foot is a result of damage to the
Deep fibular nerve bc cannot dorsiflex
Lateral compartment of the leg actions innervation and blood supply
Eversion of foot and plantarflexion
Superficial fibular nere
Fibular artery
Tendons of lateral compartment
Run posterior to lateral malleolus and deep to superior and inferior retinacula
Fibularis longus
Everts and plantarflxes
FIbularis brevis
Everts and plantarflexes
Muscles of lateral leg compartment
Fibularis longus
Fibularis brevis
Posterior compartment of the leg actions innervation and blood supply
Plantarflexion and inversion of foot…flexion of toes
Tibial nerve
Posterior tibial artery (and fibular artery)
Superficial muscles of posterior compartment and what they are named
Gastrocnemius
Soleus
Plantaris
Make up the triceps sucrae
Tendons of superficial posterior leg muscles
Gastroc and soleus Fuse to from the tendocalcaneous
Gastrocnemius
Plantarflexes foot and flexes leg
Soleus
Plantarflexes foot
Plantaris
Plantarflexes foot and leg
Engine that drives bipedalism
Plantarflexion