Ultrasonographic identification of lateral femoral cutaneous nerve anatomical variation in persistent meralgia paresthetica: A case report

Figure 2 Left and right lateral femoral cutaneous nerves. A: The left (Lt) lateral femoral cutaneous nerve (LFCN) passes through the inguinal ligament (IL); the nerve was swollen at the point of passage. The cross-sectional area (CSA) was 7 mm², and the longitudinal diameter (LD) was 5.6 mm; B: The right (Rt) LFCN passes over the IL. The CSA was 3 mm², and the LD was 2.8 mm; C: The blue shadow indicates the Lt IL, and the yellow shadow indicates the Lt LFCN. The LFCN passes through the IL; D: The blue shadow represents the Rt IL, and the yellow shadow indicates the Rt LFCN. The LFCN passes over the IL. IL: Inguinal ligament; Lt: Ieft; Rt: Right; LFCN: Lateral femoral cutaneous nerve.