Abstract
The incidence of neurologic damage after regional anesthesia is rare. However, this complication may have dramatic consequences for the patient because recovery may take several months. As nerve conduction studies and electromyography are the cornerstones of investigations in cases of postblock deficit, it is mandatory for the anesthesiologist performing regional anesthesia to have a basic understanding of these tests to discuss the cause with the surgeon and inform the patient about the prognosis.