Incidence and Effects of Unintentional Intraneural Injection During Ultrasound-Guided Subgluteal Sciatic Nerve Block

Abstract

Unintentional intraneural injection occurred at an incidence rate of 16.3% for the ultrasound-guided subgluteal approach to the sciatic nerve. Intraneural injection of mepivacaine or ropivacaine hastened the onset of blockade but did not affect block duration, and it did not result in clinical neural injury in our small sample of patients.