Which structure forms the medial boundary of the femoral triangle?

Explanation

## Boundaries of the Femoral Triangle The femoral triangle is a crucial anatomical landmark in the groin region with three distinct boundaries: ### Medial Boundary **Key Point:** The adductor longus muscle forms the medial boundary of the femoral triangle. ### Lateral Boundary **Key Point:** The sartorius muscle forms the lateral boundary of the femoral triangle. ### Superior Boundary **Key Point:** The inguinal ligament forms the superior boundary of the femoral triangle. ### Clinical Pearl: The femoral triangle is clinically important because it contains the femoral artery, vein, and nerve (from lateral to medial: **VAN** — Vein, Artery, Nerve). The adductor longus serves as a key landmark for identifying these vital structures during femoral artery puncture or cannulation. ### High-Yield: Remember the **VAN** mnemonic for the contents of the femoral sheath from lateral to medial: **V**ein, **A**rtery, **N**erve. The adductor longus medially and sartorius laterally are the muscular boundaries that define this triangle. ### Mnemonic: **SAM** — **S**artorius (lateral), **A**dductor longus (medial), **I**nguinal ligament (superior) — helps recall the three boundaries.