The Femoral Sheath Flashcards Preview

ESA 2- Musculoskeletal System > The Femoral Sheath > Flashcards

Flashcards in The Femoral Sheath Deck (29):
1

What shape is the femoral sheath?

Funnel-shaped

2

What is the femoral sheath?

A fascial tube

3

How long is the femoral sheath?

Varying length, usually 3-4cm

4

Where does the femoral sheath pass?

Deep to the inguinal ligament

5

What does the femoral sheath line?

The vascular compartment of the retro-inguinal space

6

Where does the femoral sheath terminate?

Inferiorly by blending with the adventita to of the femoral vessels

7

What does the femoral sheath enclose?

The proximal part of the femoral vessels

8

What does the femoral sheath create?

The femoral canal medial to the femoral vessels

9

What is the femoral sheath formed by?

An inferior prolongation of transversalis and iliopsoas fascia from the abdomen

10

Does the femoral sheath enclose the femoral nerve?

No

11

Why does the femoral sheath not enclose the femoral nerve?

Because it passes through the muscular compartment

12

What happens when a long femoral sheath occurs?

Its medial wall is pierced by the great saphenous vein and its lymphatic vessel

13

What does the femoral sheath allow for?

The femoral artery and vein to glide deep to the inguinal ligament during movements of the hip joint

14

How is the femoral sheath lining the vascular compartment subdivided internally?

Into thee smaller compartments by vertical septa of extraperitoneal connective tissue that extends from the abdomen along the femoral vessels

15

What are the compartments of the femoral sheath?

Lateral compartment
Intermediate compartment 
Medial compartment

16

What does the lateral compartment of the femoral sheath contain?

The femoral artery

17

What does the intermediate compartment of the femoral sheath contain?

The femoral vein

18

What does the medial compartment of the femoral sheath form?

The femoral canal

19

Describe the shape of the femoral canal

Conical, short (~1.25cm)

20

Where does the femoral sheath lie?

Between the medial edge of the femoral sheath and the femoral vein

21

Where does the femoral canal extend to?

Distally to the level of the proximal edge of the saphenous opening

22

What does the femoral canal allow for?

The femoral vein to expand when venous return from the lower limb is increased intra-abdominal pressure causes a temporary stasis in the vein

23

What does the femoral canal contain?

Loose connective tissue
Fat
A few lymphatic vessels 
Sometime a deep inguinal lymph node (lacunar lymph node)

24

What is the base of the femoral canal?

The oval femoral ring formed by the small (approx 1cm) proximal opening at its abdominal end

25

What is the opening at the base of femoral canal closed by?

Extraperitoneal fatty tissue that forms the transversely orientated femoral septum

26

What is the abdominal surface of the femoral septum covered by?

The parietal peritoneum

27

What is femoral septum pierced by?

Lymphatic vessels

28

What do lymphatic vessels piercing the femoral septum do?

Connect the inguinal and external iliac lymph nodes

29

What are the boundaries of the femoral ring?

Laterally, the vertical septum between the femoral canal and femoral vein 
Posteriorly, the superior ramus of the pubis covered by the pectineus muscle and its fascia
Medially, the lacunar ligament 
Anteriorly, the medial part of the inguinal ligament