Entrapment of which nerve can lead to symptoms of meralgia paresthetica?

• A. Sciatic nerve
• B. Obturator nerve
• C. Lateral femoral cutaneous nerve
• D. Femoral nerve

Answer: (C)

Meralgia paresthetica is a condition characterized by tingling, numbness, and burning pain in the outer thigh, which occurs due to entrapment of the lateral femoral cutaneous nerve. This nerve is responsible for the sensory innervation of the skin on the lateral aspect of the thigh, and when it becomes compressed, typically under the inguinal ligament, it results in the symptoms associated with meralgia paresthetica.

This entrapment can happen due to various factors, such as obesity, tight clothing, pregnancy, or prolonged sitting. Understanding this pathology is crucial for accurate diagnosis and management of patients presenting with lateral thigh symptoms. The other nerves mentioned do not specifically cause the symptoms characteristic of meralgia paresthetica, as they are involved in different areas of innervation.