Rarely, it has other etiologies such as direct trauma, stretch injury, or ischemia. It typically occurs in isolation. The clinical history and examination is usually sufficient for making the diagnosis. However, the diagnosis can be confirmed by nerve conduction studies.
Treatment is usually supportive.
The LFCN is responsible for the sensation of the anterolateral thigh. It is a purely sensory nerve and has no motor component. Reviewing the anatomy of the LFCN is essential for understanding the mechanism of its injury. The LFCN originates directly from the lumbar plexus and has root innervation from L2-3. The nerve runs through the pelvis along the lateral border of the psoas muscle to the lateral part of the inguinal ligament.