Sciatic Nerve Block

Excerpt

The sciatic nerve is the workhorse of the lower extremity, supplying the vast majority of the motor and sensory function to the lower limb. It supplies motor function to the posterior thigh and all muscles below the knee. Sensory function is provided to the posterior thigh, posterior knee joint, and everything below the knee except a narrow band on the medial lower leg. This area is supplied by the saphenous nerve, which is derived from the lumbar plexus.