Match each anatomic description or clinical presentation with the correct type of abdominal or pelvic hernia.
- Protrusion of abdominal contents medial to the inferior epigastric vessels, directly through the posterior wall of the inguinal canal.Direct inguinal hernia
- Protrusion of abdominal contents through the deep inguinal ring, lateral to the inferior epigastric vessels.Indirect inguinal hernia
- Herniation occurring inferior to the inguinal ligament and medial to the femoral vein, often presenting with a high rate of bowel strangulation.Femoral hernia
- Herniation through the aponeurosis of the transverse abdominal muscle, typically occurring at the lateral edge of the rectus abdominis muscle.Spigelian hernia
- Herniation through the pelvic floor presenting with signs of bowel obstruction and medial thigh pain worsened by hip extension.Obturator hernia
Answer
Direct inguinal hernias are medial to the inferior epigastric vessels. Indirect inguinal hernias are lateral to the inferior epigastric vessels. Femoral hernias are inferior to the inguinal ligament. Spigelian hernias occur at the lateral edge of the rectus abdominis. Obturator hernias present with medial thigh pain.
Each type of abdominal wall and pelvic hernia is defined by its precise anatomical boundaries. Direct and indirect inguinal hernias are differentiated by their position relative to the inferior epigastric vessels (medial versus lateral, respectively). Femoral hernias are located inferior to the inguinal ligament and carry a high risk of strangulation. Spigelian hernias uniquely protrude through the aponeurotic defect at the linea semilunaris. Obturator hernias compress the obturator nerve in the obturator canal, leading to the classic Howship-Romberg sign (medial thigh pain exacerbated by hip extension and internal rotation).
Step-by-Step Solution
Key Concept
Anatomical landmarks of abdominal wall and pelvic hernias