The lateral femoral cutaneous nerve (LFCN) has the most variable and fascinating anatomy in the body. Originating from L2–L3, it travels lateral to the psoas to enter the thigh anywhere from 6 cm medial to 6 cm lateral to the anterior superior iliac spine (ASIS). The nerve runs in its own LFCN canal. Entrapment at the groin causes meralgia paresthetica: burning, allodynia, and hypesthesia in the anterolateral thigh. Preoperative ultrasound (US)-guided localization helps identify the nerve quickly and efficiently. Traditionally, nerve decompression and neurectomies have been performed with limited success. The newly developed LFCN transposition has significantly improved the outcomes of surgery.

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Lateral Femoral Cutaneous Nerve

  • Amgad S. Hanna,
  • Thomas M. Staniszewski

摘要

The lateral femoral cutaneous nerve (LFCN) has the most variable and fascinating anatomy in the body. Originating from L2–L3, it travels lateral to the psoas to enter the thigh anywhere from 6 cm medial to 6 cm lateral to the anterior superior iliac spine (ASIS). The nerve runs in its own LFCN canal. Entrapment at the groin causes meralgia paresthetica: burning, allodynia, and hypesthesia in the anterolateral thigh. Preoperative ultrasound (US)-guided localization helps identify the nerve quickly and efficiently. Traditionally, nerve decompression and neurectomies have been performed with limited success. The newly developed LFCN transposition has significantly improved the outcomes of surgery.