TRIGONUM FEMORIS

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OUTLINE Definition Boundaries Contents Clinical correlates

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DEFINITION triangular depressed area situated in

the upper part of the medial aspect of the thigh just below the inguinal ligament

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BOUNDARIES Superiorly: lower border of inguinal

ligament Laterally: medial border of Sartorius

muscle Medially: lateral border of adductor

longus muscle Floor: - medially by pectineus &

adductor longus muscles - laterally by iliopsoas muscle

SAIL

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CONTENTSFrom lateral to medial: Femoral nerve and its (terminal) branches Femoral sheath and its contents:

Femoral artery and several of its branches.Femoral vein and its proximal tributaries (e.g.,

the great saphenous and deep femoral veins).Deep inguinal lymph nodes and associated

lymphatic vessels

MNEMONIC (lateral-medial) NAVEL

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IN THE CLINICa) femoral artery and femoral vein are

highly palpable (used for pulse taking)b) Catheterizationc) superficial position of the femoral

artery in the femoral triangle also makes it vulnerable to traumatic injury, especially laceration

d) Commonly, both the femoral artery and vein are lacerated in anterior thigh wounds because they lie close together

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e) When it is necessary to ligate the femoral artery, anastomosis of branches of the femoral artery with other arteries that cross the hip joint, may supply blood to the lower limb

f) Heavy bleeding in the lower limb may be stopped by applying pressure on some points in the femoral triangle

g) Important for coronary angioplasty & peripheral angioplasty

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FEMORAL HERNIA a protrusion of abdominal viscera (often a loop

of small intestine) through the femoral ring into the femoral canal.

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