Neurovasculature of LL

Question 1

branches off internal iliac arteries

Answer 1

sup + inf. gluteal arteries

Question 2

anastamoses occurs between internal iliac and what

Answer 2

profunda femoris

bypass blockage of external iliac or proximal femoral

Question 3

ant. compartment of thigh supplied by what

Answer 3

femoral artery

continuation of external iliac boundary = inguinal ligament

Question 4

post. compartment of thigh supplied by what

Answer 4

perforating arteries (4) off profunda femoris

Question 5

medial compartment of thigh supplied by what

Answer 5

obturator artery - branch off the internal iliac

Question 6

why is genicular anastomosis so important?

Answer 6

allows blood supply to leg during knee flexion

Question 7

5 genicular branches

Answer 7

sup. lat
sup. medial
middle
inf. lat
inf. medial

Question 8

ant. compartment of leg supplied by

Answer 8

ant. tibial artery

=

terminal branch of popliteal artery

Question 9

post. compartment of leg supplied by

Answer 9

post. tibial artery

= terminal branch of popliteal artery

Question 10

lateral compartment of leg supplied by

Answer 10

fibular artery

= branch of posterior tibial

Question 11

supply to dorsal aspect of foot

Answer 11

dorsalis pedis artery

= continuation of ant. tibial

Question 12

supply to plantar aspect of foot

Answer 12

medial and lateral plantar arteries

= bifurcation of post. tibial arteries

Question 13

what is the deep plantar arch?

Answer 13

anastomosis of deep plantar branch of dorsalis pedis artery with lateral plantar artery

Question 14

6 P’s of acute ischaemic leg

Answer 14

Pain
Pallor
Perishingly cold
Pulseless
Paraesthesia
Paralysis

Question 15

Veins of LL - superficial

Answer 15

Great and short saphenous veins

In subcut tissue superficial to deep fascia

Drains to femoral and popliteal

Question 16

Veins of LL - deep

Answer 16

accompany major arteries

ant. + post. tibial veins and fibular veins are venae comitantes

these join popliteal vein which drains to femoral

Question 17

what are perforating veins?

Answer 17

drain blood from superficial to deep veins

have valves to prevent backflow

Question 18

what aids perforating veins?

Answer 18

muscular contraction

deep fascia - compression

Question 19

the great saphenous vein can be used for emergency IV access - where?

Answer 19

immediately in front of medial malleolus