Method Of Anesthesia With Sciatic Nerve Block Needle

Bypass sciatic nerve block: The patient was placed in the supine position, and the puncture point was 1.5 ~ 2.5 cm from the upper edge of the femoral greater trochanter to the cephalic side and then to the dorsal side. A 100 mm puncture needle was used and connected to the nerve stimulation instrument. The stimulation current of the nerve stimulation instrument was set as 1 m A and the frequency as 2 Hz. Foot plantarflexion or dorsiflexion occurs when the sciatic nerve is stimulated, and muscle twitching occurs when the current is reduced to 0.3 m A, indicating accurate positioning, no return of blood, and slow injection of anesthetics.