W29-L2: Vessels of the lower leg Flashcards
What is the overall breakdown of the arteries of the lower limb?
External iliac to femoral to popliteal to anterior and posterior tibial
Where does the profundus femoris sit?
down deep on adductor magnus and sends a series of perforating branches through holes in adductor magnus
What does profundus femoris supply?
extensor muscles in posterior compartment
Where do the anterior and posterior tibial artery run in relation to the interosseous membrane?
either side
How is the femoral sheath divided?
3 compartments, lateral for artery,
middle one for vein and medial one is a dead space called femoral canal into
which the vein can expand if it needs to
What is the mouth of the femoral canal called?
Femoral ring
What are the structures around the femoral ring?
lateral is vein, medial is lacunar ligament, anterior is inguinal ligament, posterior is pectineus
What is clinically important about the femoral ring?
it communicates with abdominal cavity so
therefore can herniate
How does the femoral artery become the popliteal?
It runs through the adductor hiatus which is a hole in adductor magnus
What is the relationship of the tibial nerve to the popliteal vein and artery?
tibia nerve is superficial to popliteal
vein which itself is superficial to popliteal artery
What vessels make up the anterior neurovascular bundle?
Anterior tibial artery and veins and deep fibular nerve
What vessels make up the posterior neurovascular bundle?
Posterior artery, vein and nerve
What does timothy has a nasty dirty toe stand for?
Extensor retinaculum from medial to lateral: T=Tibialis anterior H= EHL A=Anterior tibial artery N=Deep fibular nerve D=EDL T=fibularis tertius
What does Tom, Dick and very naughty harry stand for?
Flexor retinaculum: T= tibial posterior D= FDL A= posterior tibial artery V= posterior tibial vein N= tibial nerve H= FHL
What is compartment syndrome?
neurovascular structures get compressed and this feeds into further oedema and ischaemia and so on
