Popliteal fossa , vessels and neves of the leg and dorsum of the foot

Question 1

what is the spuerolateral border of the popliteal fossa?

Answer 1

tendon of the biceps femoris

Question 2

what is the superomedial border of the popliteal fossa

Answer 2

semimebranosus (mostly) and semitendinosus tendon

Question 3

what is the inferolateral and inferomedial borders of popliteal fossa

Answer 3

inferolateral- lateral head of the gastrocnemius

inferomedial - medial head of the gastrocnemius

Question 4

that is the roof and floor of the popliteal fossa

Answer 4

popliteal fascia of fascia lata

Question 5

what is the floor of the popliteal fossa

Answer 5

posterior surface of the capsule of the knee and popliteus muscle

Question 6

what are the nerves of the popliteal fossa?

Answer 6

termination of the posterior femoral cutaneous nerve

division of the sciatic nerve into its tibial and common fibular components

muscular and cutaneous branches of the tibial nerve

cutaneous branches of the fibular nerve

Question 7

what are the others structures in the popliteal fossa other than nerves

Answer 7

popliteal vein and its tributaries

popliteal artery and its branches

popliteal lymph nodes and lymphatic vessels and fat

Question 8

how are the contents of the popliteal fossa encountered and what are they surrounded by?

Answer 8

in order from superficial to deep are NERVES, veins then arteries

surround by an ample amount of packing material (fat)

Question 9

what is the popliteal artery a direct continuation of?

Answer 9

femoral after it emerges from the adductor hiatus

deepest of the vascular structures in the popliteal fossa

Question 10

when does the popliteal artery terminate?

Answer 10

at the inferior border of the popliteus muscle by dividing into the anterior and posterior tibial arteries

Question 11

where is the medial and lateral superior genicular aa located

Answer 11

DEEP to hamstring musculature

pass in their respective directions SUPERFICIAL to the heads of the gastrocnemius to participate in genicular anastomosis

Question 12

lateral and medial inferior genicular aa.

Answer 12

located DEEP to the heads of the gastrocnemius muscle

Question 13

what supplies the interior knee joint?

Answer 13

middle genicular

arises from the ANTERIOR surface of the popliteal artery

Question 14

where do the sural branches off the popliteal artyer go?

Answer 14

pass directly into the lateral and medial heads of the gastrocnemius

Question 15

what is the course of the anterior tibial artery in proximal portion of leg versus distal portion of leg

Answer 15

descends b/w tibial anterior and extensor hallicus longus above

then between the tibialis anterior and extensor digitorum longus bleow

passes deep to extensor retinaculum and terminates as the dorsal pedis artery

Question 16

what is the course of the anterior tibial recurrent artery

Answer 16

given off as soon as the anterior tibial artery courses superior to the interosseous membrane

ascends through the substance of the tibialis anterior muscle to joint the genicular anastomosis

Question 17

what are the branches off the anterior tibial artery

Answer 17

anterior tibial recurrent
medial and lateral malleolar branches
dorsalis pedis

Question 18

when does the anterior tibial turn into the dorsalis pedis?

Answer 18

as it passes inferior to the superior extensor retinaculum

Question 19

what are the branches of the dorsalis pedis artery

Answer 19

lateral and medial tarsal arteries
arcuate a
first dorsal metatarsal a
deep plantar a

Question 20

what are the branches off the posterior tibial?

Answer 20

fibular a 
communicating branch
posterior medial malleolar 
medial calcaneal 
medial and lateral plantar arteries

Question 21

from what arteries do the genicular anastomosis arteries arise? what arteries are contributing to the anastomosis of the knee?

Answer 21

the anastomosis of the knee is composed of ten vessesl which arise from:

-lateral femoral circumflex
-femoral a.
popliteal a.
anterior and posterior tibial aa.

Question 22

what does the superficial plexus of the genicular anastomosis supply?

Answer 22

provides blood to the muscles in the area of the knee

Question 23

what does the deep plexus of the genicular anastomosis supply?

Answer 23

lies directly upon the capsule of the knee joint itself

Question 24

what are the branches off the fibular a.

Answer 24

muscular
nutrient a. (to fibula)
communicating branch (to posterior tibial)
perforating a.
posterior lateral malleolar a. which gives way to the lateral calcaneal

Question 25

in what muscle substance does the fibular a descend within?

Answer 25

the substance of the flexor hallucis longus muscle on the posterior surface of the fibula

Question 26

through what tunnel does the posterior tibial artery pass?

Answer 26

tarsal tunnel

Question 27

what does the perforating a. of the fibular a anastomose with and where does it pass through?

Answer 27

passes inferior to interosseous membrane to enter anterior compartment anastomoses with lateral malleolar and tarsal network of arteries

Question 28

what does the sciatic nerve split into?

Answer 28

tibial n common fibular

Question 29

what are the cord levels of the common fibular n.

Answer 29

L4,5 S 1, 2

Question 30

where does the common fibular nerve course within the popilteal fossa? and when it leaves ?

Answer 30

courses superficially and laterally (hugs the medial surface of the biceps femurs) when it leaves the popliteal fossa it continues to follow the course of the biceps femurs tendon to the head of the fibula

Question 31

what is the branch of the common fibular that provides a cutaneous branch to the posterior leg?

Answer 31

lateral sural cutaneous nerve

Question 32

what muscle does the common fibular pierce inferior to the head of the fibula?

Answer 32

fibularis longus muscle this is where it divides into the superficial and deep fibular nerves!

Question 33

what is the cord levels of superficial fibular n.

Answer 33

L5- S1,2

Question 34

what muscles does the superficial fibular n provide branches?

Answer 34

fibularis longus and brevis

Question 35

where does the superificial fibular n actual become superficial

Answer 35

in the distal third of the leg to innervate the anterior distal third of the leg and divides into medial and intermediate dorsal cutaneous nerves

Question 36

what does the medial and intermediate dorsal cutaneous nerves provide ?

Answer 36

dorsal digitial branches to all the toes except those provided by the deep fibular n.

Question 37

what are the cord levels of the deep fibular n.

Answer 37

L4 5

Question 38

what is the course of the deep fibular nerve

Answer 38

branches off the common fibular within the substance of the fibularis longs passes into the anterior compartment by piercing the extensor digitorum longus muscle in the anterior compartment it sits lateral to the anterior tibial innervates ALL muscles of the anterior compartment passes deep to the extensor retinaculum

Question 39

what is the path of the deep fibular n. in the distal foot

Answer 39

lies anterior to the dorsalis pedis a. divides into lateral and medial terminal branches

Question 40

where does the medial terminal branch of the deep fibular nerve go?

Answer 40

follows the course of the first dorsal metatarsal artery to cutaneously innervate the web between the first and second toes

Question 41

what does the lateral branch of the deep fibular nerve go and do

Answer 41

deep to the extensor digitorum brevis (which it innervates) then contributes to the sensory fibers to the joints of foot

Question 42

what are the cord levels of the tibial nerve

Answer 42

L 4 5 | S 1 2 3

Question 43

while in the popliteal fossa what does the tibial n. give branches to?

Answer 43

to the plantar is and gastrocnemius muscles as well as a cutaneous nerve to the posterior leg (the medial sural cutaneous)

Question 44

medial (from tibial n) and lateral cutaneous (from common fibular) nerves fuse near the musculotendinous junction of the gastrocnemius muscle via what? and then to form what?

Answer 44

fuse via the communicating branch of the lateral sural cutaneous n. form the sural n. which provides the lateral dorsal cutaneous n AND the lateral calcaneal branch to the lateral posterior surface of the heel

Question 45

when the tibial nerve leaves the popliteal fossa what muscles does it give innervation to?

Answer 45

popliteus soleus ALL THE MUSCLES OF THE POSTERIOR LEG

Question 46

where does the tibial nerve exit the leg?

Answer 46

behind the medial malleolus between the posterior tibial artery and tendon of the flexor hallucis longus

Question 47

as structures of the deep posterior compartment exit the leg they pass beneath the flexor retinaculum in what order from ANTEROMEDIAL to POSTEROLATERAL

Answer 47

TOM DICK a.n. HARRY ``` Tibialis posterior flexor digitorum longus posterior tibial artery with veins tibial nerve flexor hallucis longus ```

Question 48

what nerve supplies cutaneous innervation to the medial surface of the foot and the medial posterior surface of the heel

Answer 48

saphenous nerve (distal most extension of the femoral nerve)