Intraneural injection: A good idea or not?

Abstract

A 65-year-old man is undergoing a total shoulder replacement. The surgeon objects to a continuous peripheral nerve block and your colleague taking care of the patient does not feel comfortable about the idea of additives to local anesthetics but does want the block to ‘last as long as possible.’ Another colleague, Dr. Pro, suggests an ‘intraneural’ injection as it would ‘make the nerve block work quicker and last longer.’