FMGE 2024 — Anatomy

Question 11: Which of the following structures does not form the boundary of Hesselbach's triangle?

• A. Inferior epigastric artery
• B. Vas deferens (Correct Answer)
• C. Inguinal ligament
• D. Rectus abdominis

Explanation: ***Correct: Vas deferens*** - The vas deferens is a component of the **spermatic cord**, which passes through the **deep inguinal ring**, located superior and lateral to Hesselbach's triangle - It does **not** form any of the boundaries of Hesselbach's triangle [1] - The spermatic cord is located deep to the inguinal canal and does not define any of the superficial boundaries *Incorrect: Inferior epigastric artery* - This vessel forms the **lateral border** (or superolateral border) of Hesselbach's triangle [1] - Its anatomical position differentiates between **direct inguinal hernias** (medial to the artery, through Hesselbach's triangle) and **indirect inguinal hernias** (lateral to it) *Incorrect: Rectus abdominis* - The lateral edge of the **rectus abdominis muscle** (or its sheath) defines the **medial boundary** of Hesselbach's triangle [1] - This medial boundary marks the point through which direct inguinal hernias can protrude medially *Incorrect: Inguinal ligament* - The **inguinal ligament** forms the **inferior boundary** (or base) of Hesselbach's triangle [1] - This ligament represents the thickened lower margin of the **external oblique aponeurosis** extending from the ASIS to the pubic tubercle [1]