Posterior leg Flashcards
What is the function of the posterior compartment?
plantar flexion
Which arteries supply the posterior compartment?
posterior tibial, fibular artery
What nerve innervates the posterior compartment?
tibial nerve
what structures are within the tibial bundle?
posterior tibial a. v. and n.
What structures are within the fibular bundle?
fibular a. v.
Function of the popliteus muscle?
medially rotates the tibia in order to “unlock” the knee
symptoms of popliteal tendinitis?
pain when initiating walking
Function of the gastrocnemius?
knee flexion when ankle is dorsiflexed
what forms calcaneus tendon?
gastrocnemius
function of the soleus?
workhorse of plantar flexion
Function of the plantaris?
stretch reflex
which posterior compartment is loosely part?
superficial
what occurs when there is swelling in the deep posterior compartment?
posterior compartment syndrome which causes impeded blood flow, necrosis, poor pulse
function of tibialis posterior?
plantar flexion, maintaining arch of foot
Function of flexor digitorum longus?
flexor of digits 2-5
Function of the flexor hallucis longus?
flexor of sustentaculum tali, provides thrust during lift off
where does the flexor hallucis longus attach?
distal phalange of big toe
where does the posterior tibial artery stem from?
popliteal artery
what branch does the posterior tibial artery give off?
fibular artery
what structure would be injured during a tibial fracture?
posterior tibial artery
where does the tibial nerve stem from?
popliteal nerve
what does the tibial nerve supply?
posterior compartment
what would an injury to tibial nerve present as?
extreme lateral rotation of hip to avoid dorsiflexion
