Popliteal Fossa Flashcards Preview

ESA 2- Musculoskeletal System > Popliteal Fossa > Flashcards

Flashcards in Popliteal Fossa Deck (33):
1

What is the popliteal fossa?

A diamond shaped area

2

Where is the popliteal fossa found?

On the posterior side of the knee

3

What is the significance of the popliteal fossa?

It is the main path in which structures move from thigh to leg

4

What are the borders of the popliteal fossa?

Superiomedial 
Superiolateral
Inferiomedial
Inferiolateral

5

What forms the superiomedial border of the popliteal fossa?

Semimembranosus

6

What forms the superiolateral border of the popliteal fossa?

Biceps femoris

7

What forms the inferiomedial border of the popliteal fossa?

Medial head of the gastrocnemius

8

What forms the inferiolateral border of the popliteal fossa?

Lateral head of the gastrocnemius and plantaris

9

What forms the floor of the popliteal fossa?

The posterior surface of the knee joint capsule, and the posterior surface of the femur

10

What forms the roof of the popliteal fossa?

Made up of two layers, the popliteal fascia and skin

11

What is the popliteal fascia continuous with?

The fascia lata of the leg

12

What is the function of the popliteal fossa?

It is the main conduit for neurovascular structures entering and leaving the leg

13

What is the contents of the popliteal fossa (medial to lateral)?

Popliteal artery 
Popliteal vein 
Tibial nerve
Common fibular nerve

14

What are the most superficial of the contents of the popliteal fossa?

Tibial and common fibular nerves

15

What are the tibial and common fibular nerves branches of?

The sciatic nerve

16

What does the common fibular nerve follow?

The biceps femoris tendon, running along the lateral margin of the popliteal fossa

17

What pierces the popliteal fascia?

The small saphenous vein

18

What does the small saphenous vein do once its entered the popliteal fossa?

Empties into the popliteal vein

19

What is the deepest structure in the popliteal fossa?

The popliteal artery

20

What is the popliteal artery?

A continuation of the femoral artery

21

What does the popliteal artery do?

Travels into the leg to supply it with blood

22

What are the major causes of a mass in the popliteal fossa?

Baker’s cyst 
Aneurysm of the popliteal artery

23

What does a baker’s cyst refer to?

The inflammation and swelling of the semimembranosus bursa

24

What is the semimembranosus bursa?

A fluid filled sac found in the knee joint

25

What does a baker’s cyst usually arise in conjunction with?

Arthritis of the knee (rhuematoid or osteoarthritis)

26

What can happen to a baker’s cyst?

Usually self-resolves 
Can rupture

27

What is produced when a baker’s cyst ruptures?

Symptoms similar to DVT

28

What is an aneurysm?

A dilation of an artery, which is greater than 50% of the normal diameter

29

Why does a popliteal aneurysm have consequences for the other contents of the popliteal fossa?

The popliteal fascial layer is tough and non-extensible

30

What is particularly susceptible to compression from the popliteal artery?

The tibial nerve

31

What will damage to the tibial nerve present as?

Leg anesthesia 
Loss of leg motor function

32

How can an aneurysm of the popliteal artery be detected?

By obvious palpable pulsation in the popliteal fossa, with abnormal arterial sounds

33

What are some rarer causes of a popliteal mass?

Deep vein thrombosis 
Adventital cyst of the popliteal artery 
Various neoplasms, such as rhabdomyosarcoma