Quiz 6 Flashcards

1
Q

What are the borders of the borders of the popliteal fossa?

A

superomedial: semitendinosus and semimembranosus
superolateral: biceps femoris
inferomedial: medial head of gastocnemius
inferolateral: lateral head of gastrocnemius and plantaris

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2
Q

the popliteal fascia is continuous with?

A

the fascia lata superiorly

the crural fascia inferiorly

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3
Q

what makes up the floor of the popliteal fossa?

A

popliteal surface of femur
knee joint capsule
oblique popliteal ligament
popliteus muscle

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4
Q

what are the superficial contents of the popliteal fossa?

A
skin
subcutaneous tissue
superficial popliteal lymph nodes
posterior femoral cutaneous nerve
small saphenous vein
medial and lateral sural cutaneous nerves
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5
Q

what are the deep contents of the popliteal fossa?

A

deep popliteal lymph nodes
tibial and common fibular nerves
popliteal vein and its tributaries
popliteal artery and its branches

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6
Q

where is does the popliteal artery start and terminate? what are its terminal branches?

A

starts at adductor hiatus

terminates at the soleal line where it bifurcates into the anterior and posterior tibial arteries

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7
Q

when does the popliteal artery develop?

A

weeks 6-7 in utero

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8
Q

what are the branches of the popliteal artery?

A
superior muscular branches
superior medial genicular artery
superior lateral genicular artery
middle genicular artery
sural branches
inferior medial genicular artery
inferior lateral genicular artery
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9
Q

which branch of the popliteal artery does NOT contribute to the genicular anastomosis?

A

middle genicular artery

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10
Q

what 9 branches contribute to the genicular anastomosis?

A
descending branch of lateral circumflex femoral a.
descending genicular a.
superior medial genicular a.
superior lateral genicular a.
inferior medial genicular a.
inferior lateral genicular a.
circumflex fibular a.
recurrent branch of anterior tibial a.
posterior recurrent tibial a.
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11
Q

where is the popliteal artery located within the fossa?

A

deep to the tibial nerve and popliteal v.

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12
Q

what tributary of the popliteal vein enters the popliteal fossa?

A

small saphenous v.

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13
Q

where does the small saphenous v. originate and what is it a continuation of?

A

posterior to the lateral malleolus

continuation of the lateral marginal v.

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14
Q

what nerve does the small saphenous v. travel with?

A

sural n. distally

medial sural cutaneous proximally

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15
Q

what does the sural n. innervate?

A

ONLY cutaneous innervation of skin of posterior/lateral calf

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16
Q

what is the rami of the tibial nerve?

A

ventral/anterior divisions of ventral rami L4-S3

17
Q

what muscle compartment does the tibial n. innervate? what muscles make up this compartment?

A

posterior leg compartment

gastrocnemius, plantaris, popliteus, and soleus

18
Q

which nerve is a cutaneous branch off the tibial n. and what does it innervate?

A

medial sural cutaneous n.

innervates skin inferior to the lateral aspect of the popliteal fossa

19
Q

what is the rami of the common fibular n.?

A

dorsal/posterior divisions of ventral rami L4-S2

20
Q

which nerve is a cutaneous branch off the common fibular n. and what does it innervate?

A

lateral sural cutaneous n.

innervates skin on the superolateral part of the posterior aspect of the leg

21
Q

after leaving the popliteal fossa, the common fibular n. divides into what 2 terminal branches around the neck of the fibula?

A

superficial and deep fibular nerves

22
Q

what is the rami of the posterior femoral cutaneous nerve?

A

dorsal and ventral divisions of ventral rami S1-S3

23
Q

what does the posterior femoral cutaneous n. innervate?

A

skin of posterior thigh, popliteal fossa, and upper 1/3 of calf

24
Q

where are the superficial and deep popliteal lymph nodes located? what do they drain into?

A

superficial: near termination of small saphenous v.
deep: close to popliteal vessels
drain into deep inguinal nodes

25
Q

what structure on the deepest part of the popliteal fossa can be lacerated/compressed by the sharp edges of a posteriorly displaced distal fragment?

A

popliteal artery

26
Q

what is a popliteal/baker’s cyst?

A

a mass behind the knee that is can be caused by overproduction of synovial fluid that spreads into the gastrocnemius-semimembranosus bursa

27
Q

what 3 tendons comprise the pes anserinus insertion and what muscle compartments do they come from? what are their innervations?

A

sartorius - anterior compartment of thigh - femoral n.
gracilis - medial compartment of thigh - oburator n.
semitendinosus - posterior compartment of thigh - tibial division of sciatic n.

28
Q

where is the pes anserinus located? dermatome?

A

anteromedial aspect of proximal tibia

L3-L4 dermatome

29
Q

what is pes anserinus bursitis?

A

inflammation of the bursa located between the pes anserinus and proximal tibia

30
Q

what structures are superficial to the pes anserinus? deep?

A
superficial = saphenous n. and great saphenous v.
deep = MCL
31
Q

what cutaneous nerve mainly supplies the pes anserinus

A

saphenous n.