lateral leg compartment Flashcards
what is the medial boundary of the lateral compartment?
fibula
What is the anterior boundary of the lateral compartment?
anterior intermuscular septum
What is the posterior border of the lateral compartment?
posterior intermuscular septum
What are the muscles of the lateral compartment of the leg?
fibularis longus/brevis
What serves the lateral compartment of the leg?
Superficial fibularN
anterior tibial artery
fibular artery
what passes through the posterior inter muscular compartment?
fibular artery and vein
What is the innervation for both longus and brevis?
superficial fibular nerve (L5-S2
Where does the fibularis longus and brevis originate?
on the fibula and adjacent intermuscular septa, with the fibularis longus originating superiorly (proximally) to the fibularis brevis in the upper half (roughly) of the leg
Where does the fibers for both muscles pass?
through a groove on the posterior surface of the distal fibula
behind the lateral malleolus
through superior and inferior fibular retinacula
past fibular trochlea on the lateral surface of the calcaneus
into plantar
what is the insertion of the fibularis longus?
inserts on the medial cuneiform and first metatarsal
What is the insertion of the fibularis brevis?
inserts on the fifth metatarsal
What is the action of fibularis longus?
plantarflexes the foot and supports the transverse arch of the foot.
everts the foot
How does fibularis longus everts the foot?
fibularis longus pulls down on medial side of foot (MT1)
What is the action of fibularis brevis?
everts the foot by pulls up on lateral side of foot (MT5)
what is inversion of the foot limited by?
the length of the fibularis brevis
