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 Indian J Med Microbiol  
 

Figure 13 (A and B): Femoral nerve blocks. (A) Femoral nerve is identified just lateral to the femoral vessels in the inguinal region by its classic "salt and pepper" appearance and being superficial, it is amenable to USG interventions (B) Optimal spread of the injectate is confirmed by presence of a hypoechoic halo surrounding the echogenic nerve (halo sign)

Figure 13 (A and B): Femoral nerve blocks. (A) Femoral nerve is identified just lateral to the femoral vessels in the inguinal region by its classic