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Femoral Triangle Anatomy
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Femoral Triangle Anatomy

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Questions and Answers

What is the superior border of the femoral triangle formed by?

  • Inguinal ligament (correct)
  • Iliopsoas muscle
  • Adductor longus muscle
  • Sartorius muscle
  • What is the function of the inguinal ligament in the femoral triangle?

  • It innervates the anterior compartment of thigh
  • It provides arterial supply to the lower limb
  • It drains into the great saphenous vein
  • It acts as a flexor retinaculum (correct)
  • What is the lateral border of the femoral triangle formed by?

  • Iliopsoas muscle
  • Pectineus muscle
  • Medial border of sartorius muscle (correct)
  • Medial border of adductor longus muscle
  • What is the function of the femoral nerve in the femoral triangle?

    <p>It innervates the anterior compartment of thigh</p> Signup and view all the answers

    What is the femoral canal?

    <p>A rectangular shaped compartment with four borders and an opening</p> Signup and view all the answers

    What is the medial border of the femoral canal formed by?

    <p>Lacunar ligament</p> Signup and view all the answers

    What is the acronym NAVEL used for in the femoral triangle?

    <p>To remember the contents of the femoral triangle</p> Signup and view all the answers

    What is the roof of the femoral triangle formed by?

    <p>Fascia lata</p> Signup and view all the answers

    What drains into the femoral vein within the femoral triangle?

    <p>Great saphenous vein</p> Signup and view all the answers

    What is the length of the femoral canal?

    <p>1.3cm</p> Signup and view all the answers

    Which of the following structures forms the posterior border of the femoral ring?

    <p>Pectineal ligament</p> Signup and view all the answers

    What is the main function of the femoral canal?

    <p>Allowing distension of the adjacent femoral vein</p> Signup and view all the answers

    What is the name of the conical tunnel located in the thigh?

    <p>Adductor canal</p> Signup and view all the answers

    What is the length of the adductor canal?

    <p>15cm</p> Signup and view all the answers

    Which of the following structures borders the adductor canal laterally?

    <p>Vastus medialis</p> Signup and view all the answers

    What is the name of the gap between the adductor and hamstring attachments of the adductor magnus?

    <p>Adductor hiatus</p> Signup and view all the answers

    What is the name of the largest cutaneous branch of the femoral nerve?

    <p>Saphenous nerve</p> Signup and view all the answers

    What is the name of the diamond-shaped area found on the posterior side of the knee?

    <p>Popliteal fossa</p> Signup and view all the answers

    Which of the following muscles forms the superomedial border of the popliteal fossa?

    <p>Semimembranosus</p> Signup and view all the answers

    What happens to the femoral artery and vein as they exit the adductor canal?

    <p>They become the popliteal artery and vein</p> Signup and view all the answers

    Study Notes

    Femoral Triangle

    • A hollow area in the anterior thigh that contains neurovascular structures and is easily accessible, making it an area of both anatomical and clinical importance.
    • Borders: superior border (inguinal ligament), lateral border (medial border of sartorius muscle), and medial border (medial border of adductor longus muscle).
    • Floor: pectineus, iliopsoas, and adductor longus muscles.
    • Roof: fascia lata.

    Contents of Femoral Triangle

    • Femoral nerve: innervates the anterior compartment of the thigh and provides sensory branches for the leg and foot.
    • Femoral artery: responsible for the majority of arterial supply to the lower limb.
    • Femoral vein: drains into the femoral vein within the triangle, including the great saphenous vein.
    • Femoral canal: contains deep lymph nodes and vessels.

    Femoral Canal

    • A small, rectangular compartment located in the anterior thigh within the femoral triangle.
    • Borders: medial border (lacunar ligament), lateral border (femoral vein), anterior border (inguinal ligament), and posterior border (pectineal ligament, superior ramus of pubic bone, and pectineus muscle).
    • Contents: lymphatic vessels draining deep inguinal lymph nodes, deep lymph node (lacunar node), empty space, and loose connective tissue.

    Femoral Ring

    • Opening to the femoral canal located at its superior border, closed by the femoral septum.
    • Femoral septum is pierced by lymphatic vessels exiting the canal.

    Adductor Canal (Hunter's Canal, Subsartorial Canal)

    • A 15cm-long, narrow, conical tunnel located in the thigh that extends from the apex of the femoral triangle to the adductor hiatus of the adductor magnus.
    • Borders: anterior (sartorius), lateral (vastus medialis), and posterior (adductor longus and adductor magnus).
    • Contents: femoral artery, femoral vein, nerve to vastus medialis, and saphenous nerve (largest cutaneous branch of femoral nerve).

    Popliteal Fossa

    • A diamond-shaped area found on the posterior side of the knee that serves as the main path for structures moving from the thigh to the leg.
    • Borders: superomedial border (semimembranosus), superolateral border (biceps femoris), inferomedial border (medial head of gastrocnemius), and inferolateral border (lateral head of gastrocnemius and plantaris).
    • Floor and roof: formed by muscles in the posterior compartment of the leg and thigh.

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    Description

    Learn about the femoral triangle, a hollow area in the anterior thigh that contains important neurovascular structures. Understand its borders and clinical significance.

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