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Laboratory 12. Anterior and Medial Thigh Region
Step 3. Saphenous Hiatus and Femoral Sheath

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In the superior part of the femoral triangle, the great saphenous vein passes through the saphenous hiatus, an opening in the fascia lata, to join the femoral vein. An investing fascial sheath, called the femoral sheath, surrounds the femoral vein, femoral artery, and associated deep inguinal lymph nodes.

The femoral sheath is divided into three compartments by two vertical partitions. The lateral compartment contains the femoral artery the middle compartment contains the femoral vein; and the medial compartment contains lymphatics and loose connective tissue.

Links and References:
Grant's: 516 and 517
Netter (1ed.): 470 (2ed.): 466
Rohen/Yokochi: 426, 440, and 450