## Boundaries of the Femoral Triangle The femoral triangle is a superficial depression in the upper medial thigh with three well-defined anatomical boundaries: ### Boundaries | Boundary | Structure | |----------|----------| | **Lateral** | Sartorius muscle | | **Medial** | Adductor longus muscle | | **Superior** | Inguinal ligament | | **Floor** | Iliopsoas, pectineus, adductor longus | **Key Point:** The adductor longus forms the medial boundary. It arises from the pubic bone and runs inferolaterally, creating the medial edge of the triangle. **High-Yield:** The femoral artery, vein, and nerve lie within this triangle. The mnemonic for their arrangement from lateral to medial is **VAN** (Vein-Artery-Nerve), but remember the actual order is **NAV** (Nerve-Artery-Vein) from lateral to medial within the femoral sheath. **Clinical Pearl:** The femoral triangle is a common site for: - Femoral artery puncture for angiography - Lymph node palpation (inguinal nodes lie superficially) - Femoral hernia repair (medial to femoral vessels) ### Floor of the Triangle The floor is formed by three muscles (lateral to medial): 1. Iliopsoas 2. Pectineus 3. Adductor longus This is clinically important because the femoral artery lies on this floor and can be accessed surgically. 
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