Femoral Sheath

INTRODUCTION:
  • Femoral sheath is a funnel shaped fascial prolongation around proximal part of femoral vessels, situated in the femoral triangle, below the inguinal ligament.
  • It is 3-4 cm long. 
  • Distance between femoral ring and saphenous opening is 1.25cm 
  • It is formed by fascia iliaca.
COMPARTMENTS:
  • Femoral sheath is divided into 3 separate fascial compartements by septa :
  1. Lateral compartment :- It contains femoral artery and femoral branch of genitofemoral nerve.
  2. Intermediate compartment :- Femoral vein.
  3. Medial compartment (femoral canal) :
  • It is conical in shape, wider above and narrow below. 
  • Femoral artery lies outside the femoral sheath 
  • The wider upper opening is known as femoral ring, which is potentially a weak point in lower abdomen and is the site for femoral hernia. 
Femoral ring is bounded :
  1. Anteriorly by inguinal ligament, 
  2. medially by lacunar ligament,
  3. posteriorly by pectineus with its covering fascia, and 
  4. laterally by septum separating it from femoral vein. 
  • Femoral canal contains lymph node of cloquet or Rosenmuller and lymphatics.
Exam Question
  • Femoral ring is bounded by inguinal ligament, Lacunar ligament,pectineus, septum, femoral vein 
  • Distance between femoral ring and saphenous opening is 1.25cm 
  • Structure forming medial boundary of femoral ring is Lacunar ligament 
  • Femoral artery lies outside the femoral sheath

Don't Forget to Solve all the previous Year Question asked on Femoral Sheath