43. FEMORAL TRIANGLE

The femoral triangle (Scarpa’s triangle) is a vital anatomical, V-shaped depression located in the upper third of the anterior thigh, inferior to the inguinal ligament. Bound by the sartorius, adductor longus, and inguinal ligament, it acts as a conduit for major neurovascular structures (femoral nerve, artery, vein). 

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Key Aspects of the Femoral Triangle:

• Borders:
  • Superior (Base): Inguinal ligament.
  • Medial: Medial border of the adductor longus muscle.
  • Lateral: Medial border of the sartorius muscle.
  • Apex: Formed by the intersection of the sartorius and adductor longus.
  • Floor: Formed by the iliopsoas (laterally) and pectineus (medially).
  • Roof: Formed by fascia lata, subcutaneous tissue, and skin.
• Contents (Lateral to Medial - NAVEL):
  • Nerve: Femoral nerve.
  • Artery: Femoral artery.
  • Vein: Femoral vein.
  • Empty Space (Femoral canal/ring).
  • Lymphatics: Deep inguinal lymph nodes.
• Clinical Relevance: This area is crucial for arterial catheterization, palpating the femoral pulse, nerve blocks, and femoral hernia assessment (due to the presence of the femoral canal)