Which nerve is blocked with a fascia iliaca block?

The fascia iliaca block specifically targets the femoral nerve, which is situated near the iliac fascia in the groin region. By injecting local anesthetic into this fascia, the block effectively interrupts the transmission of pain signals through the femoral nerve, providing analgesia to the anterior aspect of the thigh, as well as parts of the knee. This block is often utilized in lower extremity surgeries and pain management scenarios.

The femoral nerve is crucial for motor innervation of the quadriceps muscle and sensory innervation to the skin of the anterior thigh, making its effective blockade particularly beneficial for procedures involving the hip and thigh area. Thus, the choice of the femoral nerve aligns directly with the anatomical and physiological basis of the fascia iliaca block, illustrating its utility in clinical practice.